Answer:
Iron, copper , calcium
Explanation:
Iron , copper and calcium are present in three different groups.
Iron is present in group eight.
Copper is present in group eleven.
Calcium is present in group two.
Sodium , potassium and rubidium are present in same group i.e. group one. These are alkali metals.
Fluorine, chlorine and bromine are present in group seventeen. These are halogens.
Argon, Krypton and xenon are present in same group i.e, group eighteen. All are these noble gases.
6.023 x 10^23 . Common salt . Total of 12.046 x 10^23 atoms
It would have 018 mass balance calculation and the total of the sedimentary rock mass would like 0.76
Melting a substance because it would still be the same substance just in a different physical form
