Q8 of 28 Page 28

Write the names from the description.

The family of nonmetals having valency one.

The family of nonmetals having valency one are:


⇒ Fluorine


⇒ Chlorine


⇒ Bromine


⇒ Iodine


These all non-metals need only one electron to achieve noble gas configuration.


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The period with electrons in the shells K, L and M.

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The group with valency zero.

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The family of metals having valency one.

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The family of metals having valency two.