1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
From the following pairs of ions which one is not an iso-electronic pair?
A
Fe2+, Mn2+
B
O2$$-$$, F$$-$$
C
Na+, Mg2+
D
Mn2+, Fe3+
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Which of the following series of transitions in the spectrum of hydrogen atom falls in visible region?
A
Paschen series
B
Brackett series
C
Lyman series
D
Balmer series
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is :
A
6p > 5f > 4d > 5p
B
5f > 6p > 4d > 5p
C
5f > 6p > 5p > 4d
D
6p > 5f > 5p > 4d
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Which one is a wrong statement?
A
Total orbital angular momentum of electron in s-orbital is equal to zero.
B
An orbital is designated by three quantum numbers while an electron in an atom is designated by four quantum numbers
C
The electronic configuration of N atom is NEET 2018 Chemistry - Structure of Atom Question 15 English Option 3
D
The value of m for dz2 is zero.
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