Question

Which is the correct relationship

• A. E1 of H = 1/2 E2 of He+ = 1/3 E3 of Li2+ = 1/4 E4 of Be3+
• B. E1(H) = E2(He+) = E3 (Li2+) = E4(Be3+)
• C. E1(H) = 2E2(He+) = 3E3 (Li2+) = 4E4(Be3+)
• D. No relation

Answer 1

Answer: (B)

E1(H) = E2(He+) = E3 (Li2+) = E4(Be3+)

Answer 2

$E_{3}\ (\text{L}\text{i}^{\text{2+}})\text{ = - 13.6 }\text{×}\text{ }\frac{3^{2}}{3^{2}}\text{ = - 13.6 eV;}$$$E_{4}\ (\text{B}\text{e}^{\text{3+}})\text{ = - 13.6 }\text{×}\text{ }\frac{4^{2}}{4^{2}}\text{ = - 13.6 eV}$$

}{= E_{3}\left( Li^{2 +} \right) = E_{4}\left( Be^{3 +} \right)}$$