Periodic Table Q1. Choose the correct answer from the options given below: (i) In the periodic table alkali metals are placed in the group: [2011][1] a. 1 b. 11 c. 17 d. 18 Show Answer Ans. a. 1 (ii) Which of the following properties do not match with elements of the halogen family? [2011][1] a. They have seven electrons in their valence shell. b. They are highly reactive chemically. c. They are metallic in nature. d. They are diatomic in their molecular form. ...