- Exam
- JEE Main
- Year
- 2022
- Date
- 27 July
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Structure of Atom
JEE Main 2022 · 27 July · Morning Shift · Chemistry · Structure of Atom
Given below are two statements. One is labelled as Assertion A and...
Given below are two statements. One is labelled as Assertion and the other is labelled as Reason .
Assertion : Energy of orbital of hydrogen atom is greater than that of orbital of lithium.
Reason : Energies of the orbitals in the same subshell decrease with increase in the atomic number.
In the light of the above statements, choose the correct answer from the options given below.
Options
- ABoth and are true and is the correct explanation of .
- BBoth and are true but is NOT the correct explanation of .
- C is true but is false.
- D is false but is true.
Correct answer
A. Both and are true and is the correct explanation of .
Step-by-step solution
As given in question (A) and (R) both are correct and (R) is the correct explanation of (A)
We know that for the electron in the same orbital, attraction is more for a larger atomic number. An increase of attraction decreases the energy of the orbital and the electron present in it.
Hence, the given reason in question is correct that energies of the orbitals in the same subshell decreases with an increase in the atomic number.
Taking into account the given elements, orbital (energy level) atom will have greater energy than that of orbital of atom.