Question

The electronic configuration of an element ‘X’ is 2,8,2 : (a) Find the number of electrons present in the atom of element X (b) Write the atomic number. (c) This element ‘X’ is a metal or a non-metal. (d) Find out the valency of the element X In detail explaoin ​

Answer 1

Answer:

(a) the number of electrons present in the atom of element X are 12.

(b) The atomic number is 12.

(c) the element X is metal.

(d) SORRY I DON'T THIS QUESTION'S ANSWER

Explanation:

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Answer 2

Explanation:

No of electrons=8+2+2=12 electrons

b) atomic number =12 as no. of electrons = no for protons in an atom= atomic number

c) this element is a metal as it has 2 valence electrons so it will donate and attain stable electronic configuration

d) as it has 2 atoms in the valence shell It will donate 2 electrons to attain stable electronic confirguration

as it will donate it will have 2 protons on excess making the charge 2+ . hence valency is 2+

bonus : the element is magnesium

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