How is an atom of an element ‘X’ having atomic number ‘Z’ and atomic mass number ‘A’ represented?

Correct Answer - `[(m_(1) - m_(2) - 2m)c^(2)]`

Correct Answer - 24.5

Given :  m = 31.97 u,  Z = 16,  A = 32 mn = 1.0087 u mH = 1.0078 u To find : Δm Formula : Δm = ZmH + (A – Z)mn – m Calculation :  Δm = ZmH...

Given :  Mass of an atom of hydrogen in gram is 1.6736 × 10-24 g. To find :  Atomic mass of hydrogen in u Calculation :  1.66056 × 10-24g = 1 u ∴ 1.6736 × 10-24...

Mass of l atom of carbon = 12.011 u  ∴ Mass of 20 atoms of same carbon isotope = 20 × 12.011 u  = 240.220 u ∴ The mass of 20 atoms of same...

The electrons possess negligible mass. They do not contribute much to the mass of an atom. Therefore, the entire mass of an atom is supposed to be present in the nucleus...

Correct option is  C) 4.5

Correct option is  C) 15

C) atomic mass

D) P – S, Q – U, R – T