Question

an element has two electron in its M- shell identify the element ? what type of ion will it form what will we the formula of it's chloride​

Answer 1

The element is Magnesium.

It will form Mg^2+ ion

The formula of it's chloride is MgCl2

Answer 2

Answer:

Shells start from K.

K, L, M ...

Hence, M shell = 3 rd shell

2 electrons in M shell means the other 2 shells that come before it are completely filled.

Therefore, the electronic configuration of the element is 2, 8, 2

Atomic number = 12

Element is Magnesium (Mg).

It forms Mg 2+ cation since it has 2 electrons in its valence shell.

Hence, its chloride will be MgCl2 (since the valency of Cl is -1 )

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