EASY
11th CBSE
IMPORTANT
Earn 100

Which of the following statements are correct ?

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Important Questions on Structure of Atom

MEDIUM
11th CBSE
IMPORTANT
The energy of an electron in the first Bohr orbit of H atom is -13.6 eV. The possible energy value (s) of the excited state(s) for electron in Bohr orbits of hydrogen is(are)
MEDIUM
11th CBSE
IMPORTANT
The energy of the electron in the third orbit will be
EASY
11th CBSE
IMPORTANT
The radius of the third orbit of hydrogen atom will be
MEDIUM
11th CBSE
IMPORTANT
The velocity of the electron in the third orbit of hydrogen atom will be
EASY
11th CBSE
IMPORTANT
If the electron absorbs 12.1 eV of energy, it will jump to the orbit
HARD
11th CBSE
IMPORTANT
  Column I   Column II
A Light has dual character p de Broglie
B Electrons have dual character q Einstein
C

N has electronic configuration

1s 22s 22px1 2py1 2pz1 and 1s 2 2s 2 2px 2 2py2 

r Aufbau
D 4s orbital is filled first than 3d s Hunds
E Basis of Quantum mechanics t Schrodinger

 

HARD
11th CBSE
IMPORTANT
 Column 1 Column 2 Column 3
(I) 1s orbital (i) ψn, l1, m1Za03/2e-Zra0 Question Image
(II) 2s orbital (ii) One radial node (Q) Probability density at nucleus 1a03
(III)  2pz orbital (iii)ψn, l, mlZa05/2re-z2a0cosθ   (R) Probability density is maximum at nucleus
(IV)  3dz2 orbital (iv) xy -plane is a nodal plane (S) Energy needed to excite electron from
n=2 state to n=4 state is 2732 times the energy needed to excite electron from n=2 state to n=6 state

For He+ ion, the only INCORRECT combination is

HARD
11th CBSE
IMPORTANT
 Column 1 Column 2 Column 3
(I) 1s orbital (i) ψn, l1, m1Za03/2e-Zra0 Question Image
(II) 2s orbital (ii) One radial node (Q) Probability density at nucleus 1a03
(III)  2pz orbital (iii)ψn, l, mlZa05/2re-z2a0cosθ   (R) Probability density is maximum at nucleus
(IV)  3dz2 orbital (iv) xy -plane is a nodal plane (S) Energy needed to excite electron from
n=2 state to n=4 state is 2732 times the energy needed to excite electron from n=2 state to n=6 state

For the given orbital in column I, the only CORRECT combination for any hydrogen-like species is