Match the columns:Column IColumn II(1) Noble gas(a) 18 elements(2) Fir

1.	Match the columns:Column IColumn II(1) Noble gas(a) 18 elements(2) First period(b) Eight elements(3) Second period(c) Two elements(4) 3rd period(d) Helium(e) Six electrons in the last orbit
Answer» (1) Noble gas – Helium (2) First period – Two elements (3) Second period – Eight elements (4) 3^rdperiod – 18 elements.

Match the columns:Column IColumn II(1) Noble gas(a) 18 elements(2) First period(b) Eight elements(3) Second period(c) Two elements(4) 3rd period(d) Helium(e) Six electrons in the last orbit

Answer»

(1) Noble gas – Helium

(2) First period – Two elements

(3) Second period – Eight elements

(4) 3^rdperiod – 18 elements.