1.3 - Valence Electrons

Question 1

What is the outermost occupied shell called?

Answer 1

Valence Shell

Question 2

Argon has an electron configuration of 2.8.8. What does this suggest?

Answer 2

It has two electrons in the first shell, eight in the second, and eight in the last.

Question 3

What does the period which an element is in signify?

Answer 3

The number of shells that contain electrons.

Question 4

In terms of electron configuration, what do noble gasses have in common?

Answer 4

They have full valence shells

Question 5

what are the electrons located in the outermost shell called

Answer 5

valence electrons

Question 6

how does the group in which an element is located in refer to the number of valence electrons it has in its outer shell

Answer 6

all the elements in the same group have the same amount of valence electrons

Question 7

how many valence electrons does carbon (C) have if it has an electron configuration of 2.4

Answer 7

4

Question 8

how many valence electrons does magnesium (Mg) have if it has 12 electrons?

Answer 8

2

Question 9

why there are two elements in the first period of the periodic table (hydrogen and helium) and eight elements in the second period.

Answer 9

because hydrogen only has 1 electron in its valence shell and helium is a noble gas meaning that their valence shell is full

Question 10

how many valence electrons does a neutral sulfur atom have if it has an electron configuration of 2.8.6

Answer 10

6