Energy Levels And Electrong Arrangements

Question 1

How many electrons can the first energy level hold?

Answer 1

2

Question 2

How many electrons can the second energy level hold?

Answer 2

8

Question 3

How many electrons can the third energy level hold?

Answer 3

18

Question 4

What is the formula for finding is many electrons are in an energy level?

Answer 4

2n^2 n means the level number

Question 5

Valance electrons are in the ____ energy level?
A: 1st
B: second
C: 3rd

Answer 5

C third

Question 6

How do you find the third energy level of an element?
A: look at the valance electrons on the periodic table
B: look at the atomic number
C: look at the atomic mass

Answer 6

A: look at the valance electrons on the periodic table

Question 7

What makes an ionic compound?
A:a metal and a non metal
B: two metals
C: two non metals

Answer 7

A: a metal and non metal

Question 8

What are the elemental charges from left to right?

Answer 8

+1, +2, variable, +3, +4/-4, -3,-2,-1,0

Question 9

What is avogadros number?

Answer 9

6.02x10^23

Question 10

How do you find the molar mass of a compound?

Answer 10

Add the atomic mass for each element together

Question 11

What units will the molar mass be in?

Answer 11

Grams/mol