In which block, 106th element belongs?
In which block, 106th element belongs?
Options
(a) s-block (b) p-block (c) d-block (d) f-block
Correct Answer:
d-block
Explanation:
Element, unnilhexium (Unh)₁o₆, belongs to d-block.
Chemistry
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 […]
Copper occurs naturally as Cu-63 and Cu-65. Given Atomic Weight
Copper occurs naturally as Cu-63 and Cu-65. Given Atomic Weight of Carbon is 63.546, Which isotope is more abundant?
Options
(a) Cu-65 (b) Both Cu-63 and Cu-65 (c) Cu-63 (d) None
Correct Answer: […]
What is the nature of the bond between B and O in (C₂H₅)₂ OBH₃?
What is the nature of the bond between B and O in (C₂H₅)₂ OBH₃?
Options
(a) Covalent (b) Coordinate Covalent (c) ionic bond (d) Banana shaped bond
Correct Answer:
Coordinate Covalent
Explanation:
In […]
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] […]
The pair of species that has the same bond order in the following is:
The pair of species that has the same bond order in the following is:
Options
(a) O₂, B₂ (b) CO, NO⁺ (c) NO⁻, CN⁻ (d) O₂, N₂
Correct Answer:
CO, NO⁺
Explanation:
No. […]
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 […]
The species having maximum stability is
The species having maximum stability is
Options
(a) CN⁺ (b) CN (c) CN⁻ (d) NO
Correct Answer:
CN⁻
Explanation:
In CN⁺, CN, CN⁻ and NO bond orders are 2, 2.5, 3 and 2.5 […]
The correct order of increasing bond angles in the following species is
The correct order of increasing bond angles in the following species is
Options
(a) Cl₂O < ClO₂ < ClO₂⁻ (b) ClO₂ < Cl₂O < ClO₂⁻ (c) Cl₂O < ClO₂⁻ < ClO₂ (d) ClO₂⁻ […]