(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 [0.5 Mark]

(ii) Group 17 – Halogens [0.5 Mark]

(iii) Group 18- Noble gases [0.5 Mark]

(b) Group 1 – Lithium (Li) and Sodium (Na) [0.5 Mark]

Group 17 – Chlorine (Cl) and Bromine (Br) [0.5 Mark]

Group 18 – Neon (Ne) and Argon (Ar) [0.5 Mark]

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(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

What are the following groups known in the modern periodic table?

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