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Statement-I: Radii of 1s, 2s and 2p subshells are in the order 1s < 2p < 2s.
Statement-II: Energies of 1s, 2s and 2p subshells are in the order 1s < 2s < 2p.
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Correct option is A
(1) Because of spherical shape of ‘ 2s’ It is large in size when compared with ‘2P' Hence the order of radii is 1s < 2p< 2s(2) Energy of orbitals based on (n+l) rule ; As (n+l) value increases energy increases , If (n+l) is same then energy depends on ‘n’ value. Hence the order of energies is 1s < 2s < 2pTalk to our academic expert!
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