How does the number of valence electrons in sodium (Na) compare to the number of valence electrons in calcium (Ca)? A. Na has two fewer valence electrons than Ca. B. Na and Ca have an equal number of valence electrons. C. Na has one more valence electron than Ca. D. Na has one fewer valence electron than Ca.

Answers

Answer 1

Answer:

D. Na has one fewer valence electron than Ca.

Explanation:

Elements in different groups has been grouper based on the number of valence electrons they possess. Valence electrons refers to the electrons at the outermost part of the shell of an atomic element.

Sodium (Na) belongs to group 1 on the periodic table meaning that it has one number of valence electrons while Calcium (Ca) belongs to group 2 meaning that it has two number of valence electrons. Hence, Na has one fewer valence electron than Ca.


Related Questions

Which of the following describes a missense mutation?
a. a base substitution that causes no change in the outcome of the protein
b. a base change that codes for a stop
c. a base substitution that causes a change in one amino acid only
d. a base insertion or deletion

Answers

Answer:

C

Explanation:

The answer is C i think but i ould be wrong

Igneous extrusive rocks have what crystal sizes ?

Answers

Answer:

igneous rocks cool from magma slowly because they are buried beneath the surface, so they have large crystals. Extrusive igneous rocks cool from lava rapidly because they form at the surface, so they have small crystals

Explanation:

what is the d/CE between ruminant and non ruminant animals​

Answers

Answer:

Ruminant animals are animals that chew cud while non-ruminant animals are animals that do not chew cud.

Explanation:

In what step of transcription does RNA polymerase bind to
the promoter on DNA?

a-Initiation
OR
b -Elongation
OR
C Termination

Answers

answer should be A. initiation :)

A water molecule is attracted to another water molecule. This is an example of

Answers

This is an example of cohesion. :)

____________________ is the process by which a cell makes a copy of the DNA in its nucleus.

A Replication
B Restoration
C Reduction
D Reproduction

Answers

Hey There!_____________________________________Answer:

[tex]\huge\boxed{Option A}[/tex]

_____________________________________REPLICATION---------------------------------------------------------------------------------------------Definition:

DNA replication is the process by which a double-stranded molecule of a DNA is replicated(copied) to produce two morphologically and chemically identical DNA molecules.

__________________________________________________Why is it Important:

Replication is a very important process for the living organism, because in a cell division, the two new daughter cells are produced which must contain the same genetic information or the DNA just like the parent cell. It cant be less or more than the parent cell.

__________________________________________________Steps of Replication:

Replication occurs in three major steps,

1- the opening of the double helix and separation of the DNA strands,

2- the priming of the template strand.

3- the assembly of the new DNA segment.

_____________________________________Best Regards'Borz'

hich is a similarity between alcohol fermentation and aerobic respiration?
Both require oxygen.
Both require light energy.
Both start with glycolysis.
Both produce alcohol.

Answers

Both produce alcohol

Answer:

B they both give information

Explanation:

correct 2022

Where can you Find DNA in the World?

Answers

Answer:

DNA

Explanation:

Most DNA is located in the cell nucleus

ALOT OF POINTS

what are some pros and cons of fire suppression?

Answers

Answer:

It is good because it keeps the fire under control but is bad because of pollution and it is harder to see.

Explanation:

After soil and nutrients have returned to the ecosystem
______.
A.) tertiary succession can begin
B.) organisms start growing in order of size and nutritional needs
C.) lichens begin to consume the soil.

Answers

Answer:

B

Explanation:

maybe it help have a good night

Help
How many molecules of oxygen is need to undergo cellular respiration?

Answers

Answer:

At least 6. You have to look at the chemical formula for cellular respiration and make sure it is balanced!

C6H12O6+6 O2→6 CO2+6 H2O

Explanation:

Answer:

6

Explanation:

In all three stages of cellular respiration combined, as many as 36 molecules of ATP are produced from just one molecule of glucose.

Is vaping a positive or negative feedback?

taking nicotine over and over is a _____ feedback loop.

After a long period of withdrawal your brain will reduce the receptors on your neurons back to how they were before addiction. This is an example of ____ feedback loop.

Answers

Answer: I think Negative?

Explanation:

1. I don’t know
2. Negative feedback
3. Positive feedback

Select the correct answers. Meningitis is the inflammation of the protective covering of the meninges. Which organs would be affected first by the condition

Answers

Answer:

Brain and spinal cord

Explanation:

Meningitis is the inflammation of the protective covering of the meninges, the three membranes covering the brain and spinal cord. Meningitis usually occurs from a viral infection, but may sometimes result from a bacterial or fungal infection, cancer or drug allergies.

Viral and bacterial meningitis may be contagious and can be transmitted through coughing and sneezing.

Symptoms of meningitis include:

headachesfeversensitivity to bright lightstiff neckseizuressleepinesslethargynausea and vomitingdecreased appetite

Treatment is by vaccination, use of antibiotics and antifungal agents.

Answer: brain and spinal cord

Explanation: i just got it right on edmentum

Predict: Based on your hypothesis, how will the mushroom population change when other organisms are added to the forest? (Trees,Bears,Deer)

Answers

Answer:

The mushroom population will decrease.

Explanation:

The animals introduced into the forest will likely eat the mushrooms.

describe oviposition of frogs briefly.​

Answers

Answer:

Oviposition and external embryonic developmental features are described in the Tobago glass frog, Hyalinobatrachium orientale.

Explanation:

1. Describe the main pathways of the water cycle, including
how water enters and leaves the atmosphere.

Answers

Answer:

Enjoy your free answer

Explanation:

Liquid water evaporates or the process of transpiration, forming water vapour that moves through the atmosphere, then comes down as precipitation, either enters the soil or transfers onto the lakes, rivers, oceans, etc.

Enjoy!

Liquid water evaporates or the process of transpiration, forming water vapour that moves through the atmosphere, then comes down as precipitation, either enters the soil or transfers onto the lakes, rivers, oceans, etc.

What is water cycle?

The water cycle, also known as the hydrologic cycle or the hydrological cycle, is a biogeochemical cycle that describes the continuous movement of water on, above and below the surface of the Earth.

Moreover, the water cycle shows the continuous movement of water within the Earth and atmosphere. It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow.

Therefore, the hydrologic cycle is important because it is how water reaches plants, animals and us! Besides providing people, animals and plants with water, it also moves things like nutrients, pathogens and sediment in and out of aquatic ecosystems.

Learn more about water cycle:

https://brainly.com/question/1535846

#SPJ2

please help will mark brailiest!!

Answers

Answer:

active transport through protein channels

Explanation:

im pretty sure

What type of mutation is shown in the picture below?
(see choices below)

insertion; missense
substitution; missense
deletion; missense
substitution; frameshift
insertion; frameshift
deletion; frameshift

Answers

Answer:

The rite answer is D the mutation is substitution; frame shift

Explanation:

Plzzzzzzzzzzzzz give me brainiest

Explain the connection between the oxidation of water in photosystem II of the light-dependent reactions and the synthesis of glyceraldehyde-3-phosphate in the light-independent reactions.

Answers

Answer:

Please find the explanation below

Explanation:

This question is describing the processes involved in photosynthesis. In the light-dependent stage of photosynthesis, specifically photosystem II (PSII), water is oxidized in a process called PHOTOLYSIS OF WATER. This process produces electrons and Hydrogen ions (H+). The electrons produced via this process is accepted by NAD+ to yield NADH.

The NADH is an electron carrier produced during the light-dependent stage and used to reduce 3-phsophoglycerate (PGA) produced in the light-independent stage to glyceraldehyde-3-phosphate (G3P).

how does changing the force affect the sound.

Answers

Answer:

A higher force will mostly sound brighter.

Explanation:

When marine animals die their shells decay into limestone when the limestone is exposed is released this process is known as

Answers

Answer:

fossilization

Explanation:

PLZZZZ HEELLLPPPP need sooon

Answers

Answer:

1.ecological

2.ecological?

3. genetic

4.

5.

6.ecological

7. genetic

8. species

9. ecological

Explanation:

here are some sorry i was trying to go fast

please what are the major branches of biology​

Answers

Answer:

Botany, zoology, and microbiology.

Explanation:

People have built canals and levees to divert water away from its natural flow and prevent floods in residential areas near Florida's Everglades.How have these changes affected the Everglades

Answers

Answer:

The everglades begins to start flooding

Explanation:

The everglades soon becomes a wetland and all the area has vast amounts of water making it harder to move on and why it has the wet season, which there is the most water.

Answer:

Areas of wetland have been filed in for houses

Explanation:

explain why tge plant roots would take in more water after the plant has turned 1000 sucrose molecules into 2000 glucoses. Use the terms osmosis, concentration gradient, hypertonic, hypotonic

Answers

Answer:

I dont know just say because the plant is built different

Explanation:

THE PLANT IS BUILT DIFFERENT

What is the name for a substance that keeps
the pH in cells within the 6.5 to 7.5 pH range?

Answers

Answer: Neutral

Explanation:

“6.5 to 7.5—neutral. over 7.5—alkaline. less than 6.5—acidic, pH less than 5.5 are considered strongly acidic.“

PLEASE HELP!!!!!

The diagram below shows parts of the rock cycle.

What type of rock does c represent

Igneous rock

Rock formed by cooling

Rock formed by heat and pressure

Sedimentary rock

Answers

Answer:
The correct answer is-sedimentary rock.

Since the figure shows rock C formed by the accumulation and deposition of sediments this is "Sedimentary rock".

Answer:

Sedimentary Rock

Explanation:

When sediments are compacted, they form a sedimentary rock. Also, the other guy can get brainliest.

plz help me plzzzzzzzzzzzzz​

Answers

Answer:

4.i.True

4.ii.False

4.iii.True

Whats the difference between a mixture and a compound? Mixtures are impure and compounds are pure, but how are mixtures formed? Are they formed with elements combined are something else? Please help! Dont copy and paste

Answers

Answer:

A compound is chemically bonded whereas mixtures are not. Compounds have a set amount of atoms that are conjoined, maybe through the process of heat, acid, water, etc, but, mixtures two things roughly mixed together, not chemically bonded.

Explanation:

Hi rosanna, im rlly bad at science lol

Pros of Biofuel
Pleas help it’s urgent

Answers

Answer:

Pros of Biofuels

Renewable – Biofuels are produced from plants and other organic material, so it can be replenished constantly. This is in contrast to the fossil fuels, which are constantly in the process of being depleted.

Clean – Biofuels are environment-friendly. They are much efficient & cleaner than fossil fuels, producing less air pollution and using materials that would otherwise be considered as waste products. Biofuels cause much less greenhouse gas emissions in comparison to the conventional types of transport fuels.

Inexpensive – They can be made easily by using local materials. Biofuels are very cheap to afford. They are the cheapest types of fuels available in the world.

Flexible – can be easily mixed with other fuels.

Additives – Biofuels like ethanol and biodiesel are better for car engines than fossil fuels. Even if not being used as the main fuel source, they can be used as additives to improve performance.

Carbon neutral – the amount of carbon dioxide created by the burning of biofuels is equal to the CO2 absorption capacity of the plants. Hence, no extra CO2 remains in the atmosphere.

Explanation:

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