Calculate the wavelength emitted during the transition of electron in between two levels of Li2+ ion whose sum is 4 and difference is 2 ?
1. 3.14 x 10-6 cm
2 1.14 x 10-5 cm
3. 1.14 x 10-6 m
4. 1.14 x 10-6 cm
Subtopic: Hydrogen Spectra |
50%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Correct sequence of the increasing order of effective nuclear charge (Zeff) of s, p and d sub-shells is -
1. d = p < s
2. d < p < s
3. d > p < s
4.d < p > s
1. d = p < s
2. d < p < s
3. d > p < s
4.d < p > s
Subtopic: Shell & Subshell |
86%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Correct distribution of electrons in oxygen atom using orbital diagram among the following is -
1.
2.
3.
4.
1.
2.
3.
4.
Subtopic: Pauli's Exclusion Principle & Hund's Rule |
89%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Correct electronic configuration of Ni+2 ion among the following is:
1. 4s03d8
2. 4s23d6
3. 4s23d10
4. 4s13d5
1. 4s03d8
2. 4s23d6
3. 4s23d10
4. 4s13d5
Subtopic: AUFBAU Principle |
79%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Subtopic: Shell & Subshell |
79%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The number of angular nodes and radial nodes present in 3p orbital is respectively-
1. 2,3
2. 1,1
3. 1, 2
4. 2,1
1. 2,3
2. 1,1
3. 1, 2
4. 2,1
Subtopic: Nodal Plane |
79%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Subtopic: Shell & Subshell |
78%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The particle among the following does not show deflection from the path on passing through an electric field is -
1. Proton
2. Cathode rays
3 . Electron
4. Neutron
1. Proton
2. Cathode rays
3 . Electron
4. Neutron
Subtopic: Introduction of Atomic Structure |
75%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The atomic number of the atom having atomic mass number 13 has 7 neutrons is:
1. 13
2. 7
3. 6
4. 8
1. 13
2. 7
3. 6
4. 8
Subtopic: Number of Electron, Proton & Neutron |
86%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Wavelength of the \(K_\alpha\) characteristics X-ray of iron and potassium are 1.931 \(\times\) 10-8 and 3.737 \(\times\) 10-8 cm respectively. What is the atomic number and name of the element of which characteristics \(K_\alpha\) wavelength is 2.289 \(\times\) 10-8 cm .
1. 24
2. 25
3. 26
4. 27
Subtopic: Quantum Numbers & Schrodinger Wave Equation |
Please attempt this question first.
Hints
© 2025 GoodEd Technologies Pvt. Ltd.