Question

Which rule is indicated by the chart given below. Write the rule and give two examples of the

elements showing same chemical properties.

H Li Be B C N o

F Na Mg AI Si P S

CI K Ca Cr Ti Mn Fe


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Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

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: