☰
The p-Block Elements
|
Properties |
White Phosphorus |
Red phosphorus |
|
1. Colour |
White but turns |
Dark red |
|
yellow on exposure |
||
|
2. State |
Waxy solid |
Brittle powder |
|
3. Density |
1.84 g cm-3 |
2.1 gcm3 |
|
4. Ignition |
307 K |
543 K |
|
temperature |
||
|
5. Stability |
Less stable at ordi- |
More stable at ordi – |
|
nary temperature. |
nary temperature |
|
|
6. Chemical |
Very reactive |
Less reactive |
|
reactivity |
Sponsor Area
Complete the following reactions
(i) C2H4 + O2 →
(ii) 4Al + 3O2 →
Sponsor Area
Sponsor Area