Answer:
False
Explanation:
All the lanthanides are not radioactive in nature. Just one of the lanthanides are radioactive.
- The lanthanides belong to the f-block on the periodic table
- Only Promethium in this group are radioactive in nature.
- Other elements in the lanthanide series might have radioactive isotopes.
The answer is D. Sound cannot travel in vacuums. Hope this helps homie
Explanation:
distance and time both are scaler quantity
Explanation:
total resistance=(2×2)/(2+2)= 1ohms
