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Plz helpand also explain it a bitit's really Confussing for me thanks in advance...​

Answer»

Answer:

Li-Na

Explanation:

Li-Na is incorrect because

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Li - lithium

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it is an INERT or nobal gases

it is an inert or nobal gasesit doesn't carry any valency ( valency - 0)

Na - Sodium

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it is a metal ,

it is a metal ,it CARRIES valency ( valency - 1 )

extra information-

some valency of some elements are

elements valency

elements valencyH 1

elements valencyH 1 S 4

elements valencyH 1 S 4Be 2

elements valencyH 1 S 4Be 2B 4

elements valencyH 1 S 4Be 2B 4AL 3

elements valencyH 1 S 4Be 2B 4Al 3O 2

elements valencyH 1 S 4Be 2B 4Al 3O 2C 4

elements valencyH 1 S 4Be 2B 4Al 3O 2C 4Mg 2

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so I hope you have understood the correct answer

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