From 2 mg calcium, `1.2 xx 10^(19)` atoms are removed. The number of g-atoms of calcium left is:

From 0.2 kg calcium, 1.2xx10^(24) atoms are removed. The number of g-atoms of calcium left is: [Take: N_(A) =6xx10^(23), Ca=40 ]

No of atoms in 4 gram of calcium

The atomic number of calcium is

Calculate the mass of 2.5gram atoms of calcium?

Calculate the mass of 1.5gram atoms of calcium?

How many atoms are present in 10 gms of calcium carbonate ?