Chemistry · Structure of Atom

JEE Main 2025 — 4 April, Morning Shift — Question 14

Which one of the following about an electron occupying the 1 s orbital in a hydrogen atom is incorrect? (Bohr's radius is represented by $\mathrm{a}_{0}$ )

Option A:
The probability density of finding the electron is maximum at the nucleus
Option B:
The 1 s orbital is spherically symmetrical
Option C:
The total energy of the electron is maximum when it is at a distance $a_{0}$ from the nucleus
Correct
Option D:
The electron can be found at a distance $2 \mathrm{a}_{0}$ from the nucleus

Answer: C

Step-by-step solution

More far the electron is from nucleus, more is its energy. Total energy of on electron is given by $-\frac{13.6 z^{2}}{n^{2}}$ . So as

$n \uparrow \Rightarrow$ energy $\uparrow$

Answer key and solution verified before publishing.

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Exam: JEE Main 2025
Paper: 4 April, Morning Shift
Subject: Chemistry
Chapter: Structure of Atom
Topic: Quantum Mechanical Model of Atom - Schrödinger