An element X belongs to 3rd period and group 2 of the periodic table. State(a) The no. of valence electrons
(b) The valency
(c) Whether it is metal or a nonmetal.
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no of valane electron is 2 as it bElongs to alkaline earth metal and its valamcy is 2 its a metal
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Answer:
The element which belongs to 3rd period and group 2 is Magnesium.
Its electronic configuration is [Ne]3s
2
i) The no. of valence electrons =2
ii) Valency =2
iii) It is a metal as it belongs to the s-block.
Explanation:
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