Question

Arrange the increasing following atoms in the eletronegativity, order of the eletron P,0,M,F atoms​

Answer 1

(i) He<Ne<Ar [When we move down in group number of electron shells increases] {r=

2

r

0

n

2

}

(ii) K<Na<Li [On going down the group atomic size gradually increases consequently attraction between nucleus and electron decreases hence low energy is required to remove electron from outermost shell so I.e. decreases]

(iii) Br<Cl<F [Because the increased number of energy level puts the outer electrons very far away from the pull of nucleus]

(iv) Li<Na<K [We know that ⟹r=

2

r

0

n

2

when number of shell atomic radius increase]