In the following table, six elements A, B, C, D, E and F (here letters are not the usual symbols of the elements) of the Modern Periodic Table with atomic numbers 3 to 18 are given:
3 - 4 - 5 - 6 - 7 - 8 - 9 - 10
A E G
11 - 12 - 13 - 14 - 15 - 16 - 17 - 18
B C D F
(a) Which of these halogens? is (i) a noble gas, (ii) a halogen
(b) If B combines with F, what would be the formula of the compound formed?
(c) Write the electronic configurations of C and E.
(a) (i) G is a noble gas.
(ii) F is a halogen.
(b) BF will be the formula of the compound formed.
(c) C has atomic number 12 and electronic configuration is K = 2, L = 8, M = 2.
E has atomic number 8 and electronic configuration is K = 2, L = 6.