Home
Class 12
CHEMISTRY
When molten zinc is cooled to solid stat...

When molten zinc is cooled to solid state, it assumes `hcp` structure. Then the number of nearest neighbours of zine atom will be

A

`4`

B

`6`

C

`8`

D

`12`

Text Solution

Verified by Experts

The correct Answer is:
D
hcp has `12` nearest neighbours.
Promotional Banner

Similar Questions

Explore conceptually related problems

Give reasons : i) lonic compounds in solid state do not conduet electricity, whereas in molten state are good conductors of electricity. (ii) ii) Silver articles when exposed to air gradually turn blackish. ii) Chenmical reaction does not take place when copper is added to iron sulphate solution.

(a) Using Bohr's second postulate of quantization of orbital angular momentum, show that the circumference of the electron in the nth orbital state in hydrogen atom is n times the de-Broglie wavelength associated with it. (b) The electron in hydrogen atom is initially in the third excited state. What is the maximum number of spectral lines which can be emitted when it finally moves to the ground state ?

Give reason : (i) Ionic compounds in solid state do not conduct electricity, whereas in molten state are good conductors of electricity. (ii) Silver articles when exposed to air gradually turn blackish. (iii) Chemical reaction does not take place when copper is added to iron sulphate solution.

An element 'X' belongs to the 3rd period and group 16 of the Modern Periodic Table. a) Determine the number of valence electrons and the valency of 'X'. b] Write the molecular formula of the compound when X reacts with hydrogen and write its electron-dot structure. c] Name the element X and state whether it is metallic or non-metallic

Vladimir Markovnikov rule : Alkenes undergo electrophilic addition reactions. It is triggered by the acid acting as a electrophile toward t-electrons of the double bond. Markovnikov's rule states that when an unsymmetrically substituted alkene reacts with a hydrogen halide, the hydrogen atom adds to the carbon that has the greater number of hydrogen, e.g., What is the energy profile for the given reaction ?

Vladimir Markovnikov rule : Alkenes undergo electrophilic addition reactions. It is triggered by the acid acting as a electrophile toward t-electrons of the double bond. Markovnikov's rule states that when an unsymmetrically substituted alkene reacts with a hydrogen halide, the hydrogen atom adds to the carbon that has the greater number of hydrogen, e.g., In which of the following reactions, diastereomers will be formed ?