Order of first ionization potentials of elements Li, Be, B, Na is - Vidyadip

MCQ

Order of first ionization potentials of elements $Li, Be, B, Na$ is

A
$Li > Be >B > Na$
✓
$Be >B > Li > Na$
C
$Na > Li > B > Be$
D
$Be > Li > B > Na$

✓

Answer

Correct option: B.

$Be >B > Li > Na$

b
(b) Ionization 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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