Electronic configuration of deuterium atom is
Electronic configuration of deuterium atom is
Options
(a) 1s¹ (b) 2s² (c) 2s¹ (d) 1s²
Correct Answer:
1s¹
Explanation:
Atomic number of deuterium = 1
Structure of Atom
The most probable radius (in pm) for finding the electron in He⁺ is
The most probable radius (in pm) for finding the electron in He⁺ is
Options
(a) 0 (b) 52.9 (c) 26.5 (d) 105.8
Correct Answer:
26.5
Explanation:
Most probable radius = a₀ / Z
where […]
The ratio of charge and mass would be greatest for
The ratio of charge and mass would be greatest for
Options
(a) proton (b) electron (c) neutron (d) alpha
Correct Answer:
electron
Explanation:
No explanation available. Be the first to write the explanation […]
Principal quantum number of an atom is related to the
Principal quantum number of an atom is related to the
Options
(a) orbital angular momentum (b) spin angular momentum (c) size of the orbital (d) orientation of the orbital in space
Correct Answer: […]
Which of the following explains the sequence of filling the electrons
Which of the following explains the sequence of filling the electrons in different shells
Options
(a) Aufbau principle (b) Hund’s rule (c) Octate rule (d) all of these
Correct Answer:
Aufbau principle
Explanation: […]
The maximum energy is possessed by an electrons,when it is present
The maximum energy is possessed by an electrons,when it is present
Options
(a) in first excited state (b) in nucleus (c) at infinite distance from the nucleus (d) in ground energy state
Correct […]
Rutherford’s experiment led to the discovery of
Rutherford’s experiment led to the discovery of
Options
(a) β-particle (b) α-particle (c) nucleus (d) electron
Correct Answer:
nucleus
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Elements having same number of nucleons and different number of protons are
Elements having same number of nucleons and different number of protons are
Options
(a) isotone (b) positron (c) isotope (d) isobar
Correct Answer:
isobar
Explanation:
No explanation available. Be the first to write […]
An electron with values 4,1,-1 and +1/2 for the set of four quantum numbers
An electron with values 4,1,-1 and +1/2 for the set of four quantum numbers n,l,m and s, respectively belongs to
Options
(a) 4 s-orbital (b) 4 p-orbital (c) 4 d-orbital (d) 4 f-orbital
Magnetic quantum number specifies
Magnetic quantum number specifies
Options
(a) size of orbitals (b) shape of orbitals (c) nuclear stability (d) orientation of orbitals
Correct Answer:
orientation of orbitals
Explanation:
No explanation available. Be the first to […]