Which of the following statements are correct ? I) The energy of hydrogen atom in its ground state is -13.6 eV II) On the basis of Bohr's model, the radius of the 3^{\text{rd }} orbit of hydrogen atom is 158.7 pm III) The order of radius of the first orbit of {\H}, {\He}^{+}, {\Li}^{2+} and {\Be}^{3+} is {\H}> {\He}^{+}> {\Li}^{2+}> {\Be}^{3+} [AP EAPCET 21 May 2025 S2]

Correct Answer is : I & III only

Atomic Structure

Section: Chemistry

Question : 11 of 32

Marks: +1, -0

Which of the following statements are correct ?
I) The energy of hydrogen atom in its ground state is -13.6 eV
II) On the basis of Bohr's model, the radius of the 3‌rd ‌ orbit of hydrogen atom is 158.7 pm
III) The order of radius of the first orbit of H,He+,Li2+ and Be3+ is H>He+> Li2+>Be3+

[AP EAPCET 21 May 2025 S2]

II & III only
I & III only
I & II only
I, II, III

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