Question

The element with the_ is written first, followed by the element with the _ charge

Answer 1

Answer:

(i) J belongs to the fifth group hence, it has 5 valence electrons.

(ii) M belongs to group number VII hence, it has 7 valence electrons. To attain stability it needs to gain 1 electron and thereby it forms single negative charged ion.

(iii) T is more reactive than R. The reactivity of an element increases down the group.

(iv) The period number indicates the number of shells present hence, T is the element which is having its electrons arranged in four shells.

Explanation:

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