1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Blizzard [7]
3 years ago
5

Which statement best explains why calcium has a larger atomic radius than magnesium? A. Calcium has a stronger nuclear charge th

an magnesium. B. Calcium has electrons in more energy levels than magnesium. C. Calcium has more neutrons than magnesium. D. Calcium’s third energy level contains more electrons than magnesium
Chemistry
2 answers:
ahrayia [7]3 years ago
7 0

Answer:

B. calcium has electrons in more energy levels than magnesium

Explanation:

atoms are made of three types of subatomic particles - electrons, protons and neutrons.

Neutrons and protons reside in the nucleus of the atom and electrons reside in energy shells

electronic configuration for both Ca and Mg are as follows

Mg - 2,8,2

Ca - 2,8,8,2

outermost energy shell of Mg with electrons is the third energy level

whereas outermost energy shell of Ca with electrons is the fourth energy shell

therefore Ca has a larger atomic radius than Mg as it has one more energy shell than Mg in which electrons reside

Stella [2.4K]3 years ago
7 0

Answer: Option (B) is the correct answer.

Explanation:

Atomic number of calcium is 20 so its electronic distribution is 2, 8, 8, 2, that is, number of shells occupied will be K, L, M and N.

Whereas atomic number of magnesium is 12 so its electronic distribution is 2, 8, 2, that is, number of shells occupied will be K, L and M.

Therefore due to increase in number of shells there will be increase in atomic size of the atom.

Hence, we can conclude that the statement calcium has electrons in more energy levels than magnesium best explains why calcium has a larger atomic radius than magnesium.

You might be interested in
Why is one side of the moon called "the dark side of the moon"?
Lisa [10]

Answer:

Option C

Explanation:

The answer is option C or "The amount of time it takes to rotate around it's axis is the same amount of time it takes to revolve around Earth."Remember that the Earth and the Moons amount of time to make a full rotation is almost in sync and they're two sides of the moon, one side we do not see and that's because that side is currently faced away from the Earth which is called the dark side of the moon. Each side has two weeks oh night, and two weeks of day because of how long it takes the moon to revolve, so while we have a side towards the Earth which is illuminated by the sun we have another pointing away in the dark.

Hope this helps.

4 0
2 years ago
How do you think the crocodile might affected if it wandered near a strong magnet?
vodomira [7]
According to florida wildlife group who experimentally tape magnets to crocodile heads to disrupt their homing ability so they don't wander into residential areas
5 0
3 years ago
How many kilojoules of heat are released when 0.72 mole of oxygen gas are used to combust methane?
KonstantinChe [14]

0.72 mole of oxygen would produce 320.4 kJ of heat.

<u>Explanation:</u>

CH₄ (g) + 2O₂ (g) → CO₂ (g) + 2H₂O (ℓ) + 890kJ

According to the equation,

2 moles of O₂ produces 890 kJ of heat

So, 0.72 moles of O₂ will produce:

= \frac{890}{2} X 0.72\\\\= 445 X 0.72\\\\= 320.4 kJ

Therefore, 0.72 mole of oxygen would produce 320.4 kJ of heat.

6 0
3 years ago
The molecules of DNA produced in replication are
Sphinxa [80]

The answer is a identical

7 0
3 years ago
Read 2 more answers
Students in Ms. Winters' class were interested in testing the antibacterial strength of hand soap versus hand sanitizer. The stu
KatRina [158]
My answer is a please tell me if I helped
3 0
3 years ago
Read 2 more answers
Other questions:
  • Tyrone wants to buy peanut butter that does not contain any hydrogenated oils. What should Tyrone be concerned about?
    6·2 answers
  • Explain how you figure out the number of neutrons in Tellurium-128.
    6·1 answer
  • Which statement accurately describes the illustration?
    8·2 answers
  • The Calvin cycle and the Krebs cycle are cycles of chemical reactions because they
    12·2 answers
  • A volume of 0.550 L of gas is contained at 23.0°C. What is the new volume of the gas if it is heated to 57.°C. Assume that the p
    10·1 answer
  • Given: glow is a find the indicated measure.​
    9·1 answer
  • Help please!!!!!!!!! :(
    6·2 answers
  • How many moles of water are contained in 3.58 x 10^24 molecules? 6.022
    10·1 answer
  • Can someone help me?
    8·1 answer
  • When Mendel crossed a plant with green peas and a plant with yellow peas, what color peas did the offspring have?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!