Two defects of mendelevs peroidic table

100mg magnesium reacts with 20ml of 1.0m hcl

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h