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
ki77a [65]
3 years ago
10

Which statement best explains why calcium has a larger atomic radius than magnesium?

Chemistry
1 answer:
Anton [14]3 years ago
6 0

Calcium has electrons in more energy levels than magnesium. The number of electron in calcium atom is 20 which means 4 energy levels. (2 electron in first shell+ 8 electron in second shell+8 electron in third shell+ 2 electron in fourth shell). While number of electron in magnesium atom is 12 which means 3 energy levels. (2 electron in first shell+ 8 electron in second shell+ 2 electron in third shell). Also the Calcium third energy level contains more electron than magnesium.

You might be interested in
A textbook measures 250 mm long, 225 mm wide and 50 mm thick. What is the volume of this book in mm3? What is the volume of this
Dvinal [7]

Answer:

2.81 × 10⁶ mm³

2.81 × 10⁻³ m³

Explanation:

Step 1: Given data

Length (l): 250 mm

Width (w): 225 mm

Thickness (t): 50 mm

Step 2: Calculate the volume of the textbook

The book is a cuboid so we can find its volume (V) using the following expression.

V = l × w × t = 250 mm × 225 mm × 50 mm = 2.81 × 10⁶ mm³

Step 3: Convert the volume to cubic meters

We will use the relationship 1 m³ = 10⁹ mm³.

2.81 × 10⁶ mm³ × 1 m³ / 10⁹ mm³ = 2.81 × 10⁻³ m³

6 0
3 years ago
Which of the following are all associated with the immune system?
nikdorinn [45]

Answer:

White Blood cells, Bone marrow, Skin

Explanation:

good luck

7 0
3 years ago
Help please I really really need it now ​
postnew [5]
1. A 2. B 5. B this is all I know hope it helps
5 0
3 years ago
Determine the mole ratio between oxygen and water for the following equation:
vodka [1.7K]

Answer:2.2

Explanation:

5 0
3 years ago
A steel block has a volume of 0.08 m³ and a density of 7,840 kg/m³. What is the force of gravity acting on the block (the weight
melomori [17]

Given:

volume of 0.08 m³

density of 7,840 kg/m³

Required:

force of gravity

Solution:

Find the mass using density equation.

D = M/V

M = DV

M = (7,840 kg/m³)(0.08 m³)

M = 627.2kg

 

F = Mg

F = (627.2kg)(9.8m/s2)

F = 6147N

7 0
3 years ago
Other questions:
  • Do you think there is a time when we will run out of fossil fuels to burn. why or why not?
    8·1 answer
  • 2NH.
    14·1 answer
  • A proton is fired toward a lead nucleus from very far away. How much initial kinetic energy does the proton need to reach a turn
    7·1 answer
  • ASAP PLEASE, 25 POINTS!
    11·2 answers
  • A cooling curve has two flat lines, or plateaus. What does the plateau at the higher temperature represent?
    14·2 answers
  • What is the unit of measurement used to report mass
    6·2 answers
  • Of the element listed wich
    14·1 answer
  • How many molecules are contained in 5.7 gms of CaCO3​
    9·1 answer
  • If a star is 300 light years away from Earth, how long does it take light from that star to reach Earth?
    6·1 answer
  • How long is a bench? Select the best estimate.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!