Select the incorrect statement - Vidyadip

MCQ

Select the incorrect statement

A
$s-$ block metal oxides are basic in nature except $BeO$ which is amphoteric.
B
Non metal oxides are acidic in nature (except $NO, N_2O, CO, H_2O$)
C
In $d-$ block all elements are metals
✓
$d-$ block metal oxides are only basic in nature

✓

Answer

Correct option: D.

$d-$ block metal oxides are only basic in nature

d
In ionic compounds as internuclear distance increases, the melting point decreases so as we move down the group, the melting point decreases.

So, as $r_c+r_a$ is greater for $RbBr$ than for $NaF$ so $NaF$ have higher melting point.

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