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An element 'X' belongs to the 3rd period...

An element 'X' belongs to the 3rd period and group 16 of the Modern Periodic Table.
a) Determine the number of valence electrons and the valency of 'X'.
b] Write the molecular formula of the compound when X reacts with hydrogen and write its electron-dot structure.
c] Name the element X and state whether it is metallic or non-metallic

Text Solution

Verified by Experts

(i) Electronic configuration of X = 2,8,6.
Valence electrons = 6.
Valency = 8-6 = 2.
(ii) Formula with hydrogen - `H_(2)XorH_(2)S`

(iii) Sulphur, non-metal.
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OSWAAL PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-TOPIC:2- SHORT ANSWER TYPE QUESTIONS-II
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