Question

Select the correct statements.
(1) For $2s$ orbital, the order of energy is as $E_{2s}(H)>E_{2s}(Li)>E_{2s}(Na)>E_{2s}(K)$
(2) For hydrogen atom, the order of energy is as $1s<2s=2p<3s=3p=3d$
(3) When an electron is free from the influence of electron, its energy is zero
(4) de-Broglie relationship is applicable only in case of macroscopic objects

• A. 1, 2 and 3 are correct
• B. 1 and 2 are correct
• C. 2 and 4 are correct
• D. 1 and 3 are correct

Answer 1

Answer: (A)

de-Broglie relationship is applicable only in case of microscopic objects.
All other statements are true.