Chemistry - GENERAL CHEMISTRY Question with Solution | TestHub

ChemistryGENERAL CHEMISTRYIntroduction, Quantum NumberMedium2 minQB

ChemistryMediumsingle choice

Passage / Comprehension

Consider a set of atoms where highest possible filled shell number for any atom can be maximum 5 and for the electrons of penultimate electron highest m = +1 then :

The maximum possible number of elements in this set can be :

Options:

Answer:

Solution:

The magnetic quantum number $m$ gives the orientation of orbitals in a subshell.

For a d-subshell, possible values are:

$m = - 2, - 1, 0, + 1, + 2$

Given the highest possible $m = + 1$ for the penultimate electron, orbitals with $m = + 2$ are not occupied.

Therefore, elements requiring the filling of the $m = + 2$ orbital are excluded.

Since the maximum filled shell is $n = 5$ , counting all valid elements gives 38.

Hence, the maximum possible number of elements in the set is 38.

Stream:JEESubject:ChemistryTopic:GENERAL CHEMISTRYSubtopic:Introduction, Quantum Number

⏱ 2mℹ️ Source: QB

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