In graphide electrons are
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 […]
Chemistry
Boron compounds behave as Lewis acid, because of their
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
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
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 […]
Carbon and silicon belong to (IV) group.The maximum coordination number
Carbon and silicon belong to (IV) group. The maximum coordination number of carbon in commonly occurring compounds is 4, whereas that of silicon is 6.This is due to
Options
(a) availability of low […]
The wrong statement about fullerene is
The wrong statement about fullerene is
Options
(a) it has 5-membered carbon ring (b) it has 6-membered carbon ring (c) it has sp² hybridization (d) it has 5-membered rings more than 6-membered rings
Incorrect statement about Ge is
Incorrect statement about Ge is
Options
(a) GeO₂ is weakly amphoteric (b) Ge(OH)₂ is amphoteric (c) GeCl₂ is more stable than GeCl₄ (d) Ge – Ge bond energy is lesser than that of […]
The incorrect statement among the following is
The incorrect statement among the following is
Options
(a) C₆₀ is an allotropic form of carbon (b) O₃ is an allotropic form of oxygen (c) S₈ is only allotropic form of sulphur (d) […]
In diborane the two H-B-H angles are nearly
In diborane the two H-B-H angles are nearly
Options
(a) 60⁰,120⁰ (b) 95⁰,120⁰ (c) 95⁰,150⁰ (d) 120⁰,180⁰
Correct Answer:
95⁰,120⁰
Explanation:
No explanation available. Be the first to write the explanation for this […]
Hardest compound of boron is
Hardest compound of boron is
Options
(a) Magnesium boride (b) aluminium boride (c) boron nitride (d) boron carbide
Correct Answer:
boron carbide
Explanation:
Boron carbide is written as B₃C.It is produced by reducing […]