Boron is unable to form BF₆³⁻ because of
Options
(a) high electronegativity of boron (b) high electronegativity of fluorine (c) lack of d-orbitals in boron (d) less difference in electronegativity between B and […]
Which of the following anions is present in the chain structure of silicates
Options
(a) (Si₂O₅²⁻)n (b) (SiO₃)n²⁻n (c) SiO₄⁴⁻ (d) Si₂O₇⁶⁻
Correct Answer:
(SiO₃)n²⁻n
Explanation:
No explanation available. Be the first to […]
Which of the following oxidation states are the most characteristic for lead and tin respectiviely?
Options
(a) 2,4 (b) 4,4 (c) 2,2 (d) 4,2
Correct Answer:
2,4
Explanation:
When ns² electrons of outermost shell […]
The correct order regarding the electronegetivity of hybrid orbitals of carbon is
Options
(a) sp < sp² < sp³ (b) sp > sp² < sp³ (c) sp > sp² > sp³ (d) sp […]
Which one of the following compounds is not a protonic acid?
Options
(a) B(OH)₃ (b) PO(OH)₃ (c) SO(OH)₂ (d) SO₂(OH)₂
Correct Answer:
B(OH)₃
Explanation:
No explanation available. Be the first to write the […]
Which compound is electron deficient?
Options
(a) BeCl₂ (b) BCl₃ (c) CCl₄ (d) PCl₅
Correct Answer:
BCl₃
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
In graphide electrons are
Options
(a) localised on each C-atom (b) localised on every third C-atom (c) spread out between the structure (d) present in anti-bonding orbital.
Correct Answer:
localised on every third […]
Boron compounds behave as Lewis acid, because of their
Options
(a) ionisation property (b) electron deficient nature (c) acidic nature (d) covalent nature
Correct Answer:
electron deficient nature
Explanation:
Lewis acids are those […]
Aluminium (III) chloride forms a dimer because aluminium
Options
(a) belongs to 3rd group (b) can have higher coordination number (c) cannot form a trimer (d) has high ionization energy
Correct Answer:
can […]
Which of the following statements about H₃BO₃ is not correct
Options
(a) It has a layer structure in which planar BO₃ units are joined by hydrogen bonds (b) It does not act as […]
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