Alkali metals have one electron in their valence shell.

True

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False

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Q. Assertion :The alkali metals are strong oxidizing agents. Reason: The one electron in their valence shell is easily lost.

Tin and lead have four electrons in their valence shells. Metals have 1, 2 or 3 electrons in their valence shells. So, what's the reason of tin and lead metals having more than three electrons in their valence shell?

Q. Assertion :Alkali metals are paramagnetic but their salts are diamagnetic. Reason: Alkali metals are elements having 1 valence electron is s-subshell. As it has one unpaired electron, the salts of alkali metals are formed by bonding of their valence electrons as they do not have unpaired electrons.

Non - metals have more than three electrons in their valence shell.

Tin and lead also have more than three electrons in their valence shell( 4 valence electrons), still they are metals.Why??

Q. Metals generally have _________ number of electrons in their valence shell.

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