State whether true or false :

All the elements having one electron in their outermost shell are metals.

True

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False

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Solution

The correct option is B False
Hydrogen has one electron in its outermost shell with electronic configuration of $1 s^{1}$ but it is a non-metal. therefore all elements having one electron in their outermost shell are not metals. Hydrogen is an exception.

Therefore, option B is correct.

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Similar questions

Name:

1. Three elements having a single electron in their outermost shell.

2. Three elements with filled outermost shell.

3. Three elements having 7 electrons in their outermost shell.

Name

(a) three elements that have a single electron in their outermost shells.

(b) two elements that have two electrons in their outermost shells.

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