1
IIT-JEE 1983
MCQ (Single Correct Answer)
+1
-0.25
The principal quantum number of an atom is related to the
A
size of the orbital
B
spin angular momentum
C
orbital angular momentum
D
orientation of the orbital in space
2
IIT-JEE 1982
MCQ (Single Correct Answer)
+1
-0.25
The ion that is isoelectronic with CO is
A
CN-
B
NO2
C
SO2
D
ClO2
3
IIT-JEE 1981
MCQ (Single Correct Answer)
+1
-0.25
Rutherford's experiment on scattering of $$\alpha-particles$$ showed for the first time that the atom has
A
electrons
B
protons
C
nucleus
D
neutrons
4
IIT-JEE 1979
MCQ (Single Correct Answer)
+1
-0.25
The number of neutrons in dipositive zinc ion with mass number 70 is
A
34
B
36
C
38
D
40
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