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Mass numbers of Li, Be and B are 7,9 and...

Mass numbers of Li, Be and B are 7,9 and 10 respectively. Which of the following has two electrons, three protons and four neutrons ?

A

`B^(+)`

B

`Be^(2+)`

C

`Li^(+)`

D

Be

Text Solution

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The correct Answer is:
C
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  • Which of the following ion has three unpaired d-electrons

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