Question

The following diagram shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols):

(i) Select the letter which represents an alkali metal.
(ii) Select the letter which represents a noble gas.
(iii) Select the letter which represents a halogen.
(iv) What type of bond is formed between a and e?
(v) What type of bond is formed between d and e ?

Lakhmir Singh Chemistry Class 10

Answer 1

1. c.alkali metal is lithium here li represents alkali group

2. d

3.e

4 covalent 5. covalent.

Answer 2

Please refer the attachment for diagram:

(i) Select the letter which represents an alkali metal:  d

(ii) Select the letter which represents a noble gas: c

(iii) Select the letter which represents a halogen :e

(iv) What type of bond is formed between a and e:  covalent bond as it involves sharing of electrons

(v) What type of bond is formed between d and e ?Ionic bond as it between metals and non metals