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The pair of atoms having the same number...

The pair of atoms having the same number of neutrons is

A

`""_(6)^(12)C, ""_(12)^(24)Mg`

B

`""_(11)^(23)Na, ""_(9)^(19)F`

C

`""_(11)^(23)Na , ""_(12)^(24)Mg`

D

`""_(11)^(23)Na, ""_(19)^(9)K`

Text Solution

Verified by Experts

The correct Answer is:
C
`""_(11)^(23)Na , ""_(12)^(24)Mg`
Atomic mass – no. of protons = no. of neutrons
`""_(11)^(23)Na " " `23- 11 = 12 neutrons
`""_(12)^(24)Mg" "`24- 12 = 12 neutrons
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