1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

Ionisation energy for H+ ion is proportional to rn, then value of n is

A
1
B
$$-$$1
C
2
D
$$-$$2
2
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

Rutherford model could not explain

A
electronic structure of an atom
B
stability of an atom
C
Both (a) and (b)
D
None of the above
3
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

Ionisation energy of H-atom is 13.6 eV. The wavelengths of the spectral line emitted when an electron in Be3+ comes them 5th energy level to 2nd energy level is

A
43.5 nm
B
4350 nm
C
4.35 nm
D
435 nm
4
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

If the quantum number I could have the value 'n' also then, Sc(21) would have electronic configuration as (other rules strictly followed)

A
1s2 1p6 2s2 2p6 2d3 3s2
B
1s2 1p6 2s2 2p6 3s2 2d3
C
1s2 2s2 2p6 3s2 3p6 3d1 4s2
D
1s2 2s2 2p6 3s2 3p6 3d3
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