Question

Nitrogen has an atomic number of 7. How many covalent bonds can nitrogen form? show work

Chlorine has an atomic number of 17; therefore, it has ______ electrons in its outermost electron shell. show work

Answer 1

Question 1

The number of covalent bond form by an atom is dependent on the number of valence electron. Nitrogen atomic number is 7. Therefore, the atomic configuration is

1s²2s²2p³

where

2s²2p³ show electron in the valence shell , which is 5.(2+3)

Therefore, in order to complete outershell , nitrogen need three more electron.

So, the nitrogen form 3 covalent bond with another atom.

For example, NH₃ , nitrogen form three covalent bond with hydrogen atom.

Please note: covalent bond is form by sharing of electron.

Question 2

Atomic number of chlorine is 17.

Therefore, its have electronic configuration of 2,8,7 .

That is 3s²3p⁵

Here, 7(5+2), is showing the number of electron in.the outermost shell.

The chlorine nedded 1 electron to complete its outermost shell. Therefore, its valency is 1