Q.
Match the following.
Column I (Molecules)
Column II (Number of lone pairs on central atom)
A
$NH _{3}$
1
Two
B
$H _{2}O$
2
Three
C
$XeF_{2}$
3
Zero
D
$CH _{4}$
4
Four
5
One
| Column I (Molecules) | Column II (Number of lone pairs on central atom) | ||
|---|---|---|---|
| A | $NH _{3}$ | 1 | Two |
| B | $H _{2}O$ | 2 | Three |
| C | $XeF_{2}$ | 3 | Zero |
| D | $CH _{4}$ | 4 | Four |
| 5 | One | ||
EAMCETEAMCET 2010
Solution:
Molecules
Structure
Number of lone pairs
$NH _{3}$
One
$H _{2}O$
Two
$XeF_{2}$
Three
$CH _{4}$
Zero
Thus, the correct match is
$A -(5), B -(1) ; C -(2) ; D -(3)$
| Molecules | Structure | Number of lone pairs |
|---|---|---|
| $NH _{3}$ | |
One |
| $H _{2}O$ | |
Two |
| $XeF_{2}$ | |
Three |
| $CH _{4}$ | |
Zero |