Question

Select the correct statements.
(1) For $2 s$ orbital, the order of energy is as $E_{2 s}( H )>E_{2 s}( Li )>E_{2 s}( Na )>E_{2 s}( K )$
(2) For hydrogen atom, the order of energy is as $1 s<2 s=2 p<3 s=3 p=3 d$
(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.