Question

An element X has 12 neutrons and 12 electrons.
a. Show the calculation and determine its atomic number, its mass number, its
valency.
b. Is this elements a metal or non-metal. Give reason.

Answer 1

Explanation:

Since, it has 6 valence electrons, it belongs to group no. 16.

(b) It has 3 Valence shells, so it belongs to period no 3.

(c) The number of valence electron is 6.

(d) The valency of E is 2 because it requires 2 electrons to achieve its stability .

(e) It is a non-metal.