Determine whether each of the electronic configurations give

Determine whether each of the electronic configurations given below is an inert gas, a halogen, an alkali metals, an alkaline earth metal or a transition metal. justify your choices?
a. 1s^2 2s^2 2p^6 3s^2 3p^6
b. 1s^2 2s^2 2p^6 3s^2 3p^6 3d^7   4s^2
c. 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10,4s^2 4p^6
d. 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1
e. 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^6     4d^5 5s^2
f.   1s^2 2s^2 2p^6 3s^2

Solution

Solution:-

(a) Answer           Name of element    - Ar (Argon)

                              Atomic number     -   18

                              Group                       - Inert gas

(b) Answer     Name of element -      Co (Cobalt)

                       Atomic number -     27

                       Group                  - Transition metal

(c) Answer       Name of element   -    Kr (Krypton)

                         Atomic number   - 36

                          Group   -    Inert gas

(d) Answer          Name of element   -     K ( Potassium)

                           Atomic number    -   19

                           Group -   Alkali metal

(e) Answer     Name of element - Tc ( Technetium)

                         Atomic number   - 43

                          Group        -          Transition metal

(f) Answer   Name of element    -   Magnesium (Mg)

                     Atomic number   -     12

                     Group     -        Alkaline earth metal