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Order of first ionisation potentials of ...

Order of first ionisation potentials of elements `Li,Be,B, Na` is

A

Li gt Be gtB gt Na

B

Be gtB gt Li gt Na

C

Na gt Li gt B gt Be

D

Be gt Li gt B gt Na

Text Solution

Verified by Experts

The correct Answer is:
B
Ionisation potential increases as we go from left to right in a period, while it decreases as we come down a group.
`{:(Be, B , Li, Na),(9.3, 8.3,5.4, 5.1):}`
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