MCQ
The metal which can be extracted from pyrolusite ore is :
- AMercury.
- ✓Manganese.
- CAluminium.
- DMagnesium.
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|
Group Number
|
$IA$ | $IIA$ | $IIIA$ | $IVA$ |
|
Period
|
$1$ | $2$ | $13$ | $14$ |
|
Second
|
$Li$ | $ $ |
$C$ |
|
|
Third
|
$A$ | $Mg$ | $AI$ | $Si$ |
|
Fouth
|
$K$ | $B$ |
|
$D$ |
| $A$ | $B$ | $C$ | $D$ | |
| $(i)$ | $Cs$ | $Be$ | $Ca$ | $C$ |
| $(ii)$ | $Na$ | $Ca$ | $B$ | $Ge$ |
| $(iii)$ | $Na$ | $B$ | $Ca$ | $Ge$ |
| $(iv)$ | $Cs$ | $B$ | $Ca$ | $C$ |