Weight of a body is less in the mines. Why?
The weight of a body is less in the mines because when we move deeper the earth gravity decreases but our mass is always constant.
Write two differences between alkali and Alkaline earth metal?
Alkali metal | alkaline earth metal |
They lie in the first group and have valency 1. | They lie in second group and have valency 2. |
Comparatively they are more reactive and exhibit high metallic property. | Comparatively they are less reactive and exhibit lesser metallic property. |