CBSE Class 10 Science 2016 Term II Outside Delhi Set 1

Question : 9 of 36

Marks: +1, -0

An element '

X

' belongs to

3^{\;\text "rd "\;}

period and group 16 of the Modern Periodic Table.**
(a) Determine the number of valence electrons and the valency of '

X

'.
(b) 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.

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