Discussion Forum
Que. | Isotopes present in nature are |
a. | 270 |
b. | 280 |
c. | 290 |
d. | 300 |
Correct Answer:280
|
Que. | Isotopes present in nature are |
a. | 270 |
b. | 280 |
c. | 290 |
d. | 300 |
Correct Answer:280
|