Question

Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.

Oxygen – \[\ce{^16_8O}\]

[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]

Answer 1

Oxygen – \[\ce{^16_8O}\]
Atomic number Z = p = e = 8
Mass number    A = p + n
                         16 = 8 + n
                       ∴ n = 16 − 8 = 8
   O
8 = 2, 6
      (K, L)