Bhor’s theory is applicable to
Bhor’s theory is applicable to
Options
(a) He (b) Li²⁺ (c) He²⁺ (d) None of these
Correct Answer:
Li²⁺
Explanation:
Bohr’s theory is applicable to H-like species (e.g., Li²⁺).
Structure of Atom
The spectrum of He is expected to be similar to
The spectrum of He is expected to be similar to
Options
(a) H (b) Li⁺ (c) Na (d) He⁺
Correct Answer:
Li⁺
Explanation:
Both He and Li⁺ contain 2 electrons each therefore their […]
The orbital angular momentum of a p-electron is given as :
The orbital angular momentum of a p-electron is given as :
Options
(a) h/(√2π) (b) √3 x (h/2π) (c) √(3/2) x h/π (d) √6 x h/2π
Correct Answer:
h/(√2π)
Explanation:
Orbital Angular Momentum […]
The electron configuration of an element is 1s²,2s²,2p⁶,3s²,3p⁶,3d⁵,4s¹
The electron configuration of an element is 1s²,2s²,2p⁶,3s²,3p⁶,3d⁵,4s¹. This represents its
Options
(a) cationic form (b) anionic form (c) ground state (d) excited state
Correct Answer:
ground state
Explanation:
This electron configuration is […]
The electron was shown experimentally to have wave properties by
The electron was shown experimentally to have wave properties by
Options
(a) de Broglie (b) Davisson and Germer (c) N. Bohr (d) Schrodinger
Correct Answer:
Davisson and Germer
Explanation:
Davission and germer demonstrated […]
An ion has 18 electrons in the outermost shell, it is
An ion has 18 electrons in the outermost shell, it is
Options
(a) Cu⁺ (b) Th⁴⁺ (c) Cs⁺ (d) K⁺
Correct Answer:
Cu⁺
Explanation:
Cu⁺ = 29 -1 electrons Electronic configuration – 1s² […]
Which one of the following ions has electronic configuration[Ar] 3d⁶?
Which one of the following ions has electronic configuration[Ar] 3d⁶? (At. no: Mn=25, Fe=26, Co=27, Ni=28)
Options
(a) Ni³⁺ (b) Mn³⁺ (c) Fe³⁺ (d) Co³⁺
Correct Answer:
Co³⁺
Explanation:
Ni³⁺ (28) = [Ar] […]
Which of the following is isoelectronic?
Which of the following is isoelectronic?
Options
(a) CO2, NO₂ (b) NO₂⁻, CO₂ (c) CN⁻, CO (d) SO₂, CO₂
Correct Answer:
CN⁻, CO
Explanation:
Both CN⁻, CO has 14 electrons
The ion that is isoelectronic with CO is
The ion that is isoelectronic with CO is
Options
(a) CN⁻ (b) O₂⁺ (c) O₂⁻ (d) N₂⁺
Correct Answer:
CN⁻
Explanation:
We know that ions which have the same number of electrons are […]
Which of the following species has four lone pairs of electrons?
Which of the following species has four lone pairs of electrons?
Options
(a) I (b) O⁻ (c) Cl⁻ (d) He
Correct Answer:
Cl⁻
Explanation:
No explanation available. Be the first to write the […]