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Atomic Valency

Elements X , ...

Question

Elements X , Y and Z have atomic number 6 ,9 and 12 respectively.Which one
(1) will form an anion?
(2) will form a cataon?
(3)has 4 electron in its outermost shell ?

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Solution

X is carbon

Y is fluorine

Z is magnesium.

Magnesium..... That is...... Z is a cation.

Flourine........ That is.........Y is an anion.

Carbon exhibits the valencies from +4 to -4

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