1
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

The stability of dihalides of $$\mathrm{Si}, \mathrm{Ge}, \mathrm{Sn}$$ and decreases gradually in the sequence.

A
$$\mathrm{GeX}_2>\mathrm{SiX}_2>\mathrm{SnX}_2>\mathrm{PbX}_2$$
B
$$\mathrm{PbX}_2>\mathrm{SnX}_2>\mathrm{GeX}_2>\mathrm{Six}_2$$
C
$$\mathrm{Six}_2>\mathrm{GeX}_2>\mathrm{PbX}_2>\mathrm{SnX}_2$$
D
$$\mathrm{PbX}_2>\mathrm{GeX}_2>\mathrm{SnX}_2>\mathrm{SiX}_2$$
2
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Consider the following boron halides.

1. $$\mathrm{BF}_3$$

2. $$\mathrm{BCl}_3$$

3. $$\mathrm{BBr}_3$$

4. $$\mathrm{BI}_3$$

The Lewis acid characters of these halides are in the order of

A
1 < 2 < 3 < 4
B
1 < 3 < 2 < 4
C
4 < 3 < 2 < 1
D
4 < 2 < 3 < 1
3
VITEEE 2021
MCQ (Single Correct Answer)
+1
-0

Which of the following oxides of group 16 has the highest boiling point?

A
$$\mathrm{H}_2 \mathrm{O}$$
B
$$\mathrm{H}_2 \mathrm{S}$$
C
$$\mathrm{H}_2 \mathrm{Se}$$
D
$$\mathrm{H}_2 \mathrm{Te}$$
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