Advertisements
Advertisements
Question
Choose the correct option.
“No two electrons in the same atoms can have identical set of four quantum numbers”. This statement is known as -
Options
Pauli’s exclusion principle
Hund’s rule
Aufbau rule
Heisenberg uncertainty principle
Solution
“No two electrons in the same atoms can have identical set of four quantum numbers”. This statement is known as - Pauli’s exclusion principle
APPEARS IN
RELATED QUESTIONS
Using s, p, d notations, describe the orbital with the following quantum numbers n = 4; l =3.
Choose the correct option.
Principal Quantum number describes -
State Heisenberg uncertainty principle.
Give the names of quantum numbers.
Define the term Electronic configuration
State Hund’s rule of maximum multiplicity with a suitable example.
State the order of filling atomic orbitals following Aufbau principle.
Explain the anomalous behaviour of copper.
Write orbital notations for the electron in orbitals with the following quantum numbers.
n = 4, l = 2
Write orbital notations for the electron in orbitals with the following quantum numbers.
n = 3, l = 2
Write condensed orbital notation of electronic configuration of the following element:
Oxygen (Z = 8)
Explain in brief, the significance of the azimuthal quantum number.
Using the concept of quantum numbers, calculate the maximum numbers of electrons present in the ‘M’ shell. Give their distribution in shells, subshells, and orbitals.
Indicate the number of unpaired electrons in \[\ce{Si}\] (Z = 14).
Indicate the number of unpaired electron in:
Cr (Z = 24)
Which one of the following orders is CORRECT in case of energy of the given subshells?
P: n = 4; l = 3
Q: n = 5; I = 1
R: n = 5; l = 0
S: n = 4; l = 2
How many electrons can fit in the orbital for which n = 4 and l = 2?
Which of the following options does not represent ground state electronic configuration of an atom?
Number of angular nodes for 4d orbital is ______.
The pair of ions having same electronic configuration is ______.
Which of the following sets of quantum numbers are correct?
`n` | `l` | `m_l` | |
(i) | 1 | 1 | +2 |
(ii) | 2 | 1 | +1 |
(iii) | 3 | 2 | –2 |
(iv) | 3 | 4 | –2 |
The arrangement of orbitals on the basis of energy is based upon their (n + l) value. Lower the value of (n + l), lower is the energy. For orbitals having same values of (n + l), the orbital with lower value of n will have lower energy.
Based upon the above information, arrange the following orbitals in the increasing order of energy.
5p, 4d, 5d, 4f, 6s
The arrangement of orbitals on the basis of energy is based upon their (n + l) value. Lower the value of (n + l), lower is the energy. For orbitals having same values of (n + l), the orbital with lower value of n will have lower energy.
Based upon the above information, solve the questions given below:
Which of the following orbitals has the lowest energy?
4d, 4f, 5s, 5p
The electronic configuration of valence shell of Cu is 3d104s1 and not 3d94s2. How is this configuration explained?
Match the quantum numbers with the information provided by these.
Quantum number | Information provided |
(i) Principal quantum number | (a) orientation of the orbital |
(ii) Azimuthal quantum number | (b) energy and size of orbital |
(iii) Magnetic quantum number | (c) spin of electron |
(iv) Spin quantum number | (d) shape of the orbital |
Choose the INCORRECT statement
Which of the following is the correct plot for the probability density ψ2 (r) as a function of distance 'r' of the electron from the nucleus for 2s orbitals?
Which one of the following laws will represent the pairing of electrons in a subshell after each orbital is filled with one electron?