List of top Chemistry Questions on Electronic configuration of atoms and ions asked in NEET (UG)

Given below are two statements:
Statement I: Ferromagnetism is considered as an extreme form of paramagnetism.
Statement II: The number of unpaired electrons in a $Cr^{2+}$ ion (Z = 24) is the same as that of a $Nd^{3+}$ ion (Z = 60).
In the light of the above statements, choose the correct answer from the options given below:

Spin only magnetic moment is same for which of the following ions?
A. T3+
B. Cr2+
C. Mn2+
D. Fe2+
E. Se3+
Choose the most appropriate answer from the options given below
The highest number of helium atoms is in
The pair of Lanthanoid ions which are diamagnetic is
Given below are two statements:
Statement I: Both [Co(NH3)6]3+ and [CoF6]3- complexes are octahedral but differ in their magnetic behaviour.
Statement II: [Co(NH3)6]3+ is diamagnetic whereas [CoF6]3- is paramagnetic.
In the light of the above statements, choose the correct answer from the options given below:
The E° value for the Mn3+/Mn2+ couple is more positive than that of Cr3+/Cr2+ or Fe3+/Fe2+ due to change of
Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s2 2s2 2p3 , the simplest formula for this compound is
Among CaH2 , BeH2 , BaH2 , the order of ionic character is
Which one of the following elements is unable to form MF63-ion ?
The element Z = 114 has been discovered recently. It will belong to which of the following family group and electronic configuration?