Question

An element X belongs to 4th period and group II of the periodic table . State:
a. The number of valence electrons.
b. The valency
c. Name the element
d. Whether it is a metal or a non-metal.

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Answer 1

Answer:

The element which belongs to 3rd period and group 2 is Magnesium.

Its electronic configuration is [Ne]3s2

i) The no. of valence electrons =2

ii) Valency =2

iii) It is a metal as it belongs to the s-block

Answer 2

Explanation:

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