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Question

Atomic number of element Z is 16
(i) State the period and group to which Z belongs.
(ii) Is Z a metal or a non-metal?
(iii) State the formula of the compound between Z and hydrogen.
(iv) What kind of a compound is this?

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Answer

(i) The element belongs to 3rd period and 16 [VI A] group.

Reason

The element Z has atomic number 16 and so the electronic configuration will be 2, 8, 6. The number of shells present in an atom determines it’s period. Hence, Z will belong to 3rd period as it has three shells. The number of valence electrons determine the group of the element. Hence, Z will belong to group 16 [VI A] as it has 6 electrons in the valence shell.

(ii) Z is a non metal.

(iii) It forms H2Z

(iv) It is a weak acid.

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