Find out the incorrect statement - Vidyadip

MCQ

Find out the incorrect statement

A
The nature of oxide $A$ and $E$ element is amphoteric
B
Element $E$ and $F$ has difference in $Z_{eff}$ is $1.5$
✓
Oxide of element $G$ and $H$ is acidic in higher $O.S.$
D
Element $H$ forms neutral oxide in lower oxidation state which is formed when formic acid is react with dil $H_2SO_4$

✓

Answer

Correct option: C.

Oxide of element $G$ and $H$ is acidic in higher $O.S.$

c
As charges of the ions increases or their sizes decreases the lattice energy increases resulting in higher melting point and greater hardness.

Amongst sodium halides $NaF$ has the maximum lattice energy so it has the highest melting point. As $F$-has the smallest size.

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