(a) What are the following groups known as?

(i) Group 1

(ii) Group 17

(iii) Group 18

(b) Name two elements of each group.

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Solution

a) (i) Group 1 - Alkali Metals

(ii) Group 17 – Halogens

(iii) Group 18- Noble gases

(b) Group 1 – Lithium (Li) and Sodium (Na)

Group 17 – Chlorine (Cl) and Bromine (Br)

Group 18 – Neon (Ne) and Argon (Ar)

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Similar questions

(a) What are the following groups known as ?

(i) Group 1 (ii) Group 17 (iii) Group 18

(b) Name two elements of each group.

Question 17

Elements of which of the following group (s) of periodic table do not form hydrides?

(a) Groups 7,8,9 (b) Group 13

The atomic numbers of three elements A, B and C are given below :

Element Atomic number

A 5

B 7

C 10

(i) Which element belongs to group 18? (ii) Which element belongs to group 15?

(iii) Which element belongs to group 13? (iv) To which, period/periods do these elements belong?

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