Question

the electronic configuration of the following element also mention the name of valence cell and number of valence electron for the same

1. lithium
2. calcium
3. chlorine
4. oxygen

it is not mcq

Answer 1

Answer:

Lithium :

Electron configuration : 2,1

Valence shell : Lithium has 3 electrons --- 2 in the first shell, and 1 in the second shell

number of valence electron : 1

Calcium :

Electron configuration : 2,8,8,2

Valence shell : Two are in the first shell, eight in the second shell, eight in the third shell, and two in the fourth shell.

number of valence electron : 2

Chlorine :

Electron configuration : 2,8,7

Valence shell : The last shell of a chlorine atom has 7 electrons in it. Therefore, there are 7 valence electrons in an chlorine atom.

number of valence electron : 7

Oxygen :

Electron configuration : 2,6

Valence shell : two in the first shell and four in the second shell .

number of valence electron : 6

Explanation:

can you please mark mine as brainlest please.

Explanation:

can you please mark mine as brainlest please.

Answer 2

1. 2,1

2. 2,8,8,2

3. 2,8,7

4. 2,6

The name of valence shell of every element are same bro, i.e., "Valence shell".

No. of valence electrons are the last digits of their electronic configuration.

Explanation:

Hope it helps.