1.15 g of a metallic element reacts with 300cm3 of oxygen at 298k and 1 atm pressure, to form an oxide which contains o2– ions.

what could be the identity of the metal?

a calcium
b magnesium
c potassium
d sodium

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action