An element has an atomic number 16. State:
(i) the period to which it belongs.
(ii) the number of valence electrons.
(iii) whether it is a metal or non-metal.

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Solution

(i) An element with atomic number 16 belongs to 3^rd period.
(ii) The number of valence electrons in the element is six.
(iii) It is a non-metal, as it contains six electrons in its outermost shell and requires two electrons to attain noble gas configuration.

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