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The correct order of bond dissociation enthalpy of halogens is ______.
Concept: undefined >> undefined
When chlorine is passed through the molten tin, the product obtained is ______.
Concept: undefined >> undefined
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NH3 and BF3 combine readily because of the formation of ______.
Concept: undefined >> undefined
The coordination number of an atom in a body-centered cubic structure is ______.
[Assume that the lattice is made up of atoms]
Concept: undefined >> undefined
An element has body centered cubic structure with a cell edge of 3.0 A. The density of the metal is 2 amu/Å3. Atoms present in 243 × 1024 amu of the element are ______ × 1024.
Concept: undefined >> undefined
Which among the following factors is the most important in making fluorine, the strongest oxidizing halogen?
Concept: undefined >> undefined
The interhalogen compound fonned from the reaction of bromine with excess of fluorine is a ______.
Concept: undefined >> undefined
A unit cell of sodium chloride has four formula units. The edge length of the unit cell is 0.564 nm. The density of sodium chloride is ______ g/cm3.
Concept: undefined >> undefined
The set in which compounds have different nature is ______.
Concept: undefined >> undefined
Match List - I with List - II:
| List - I | List - II | ||
| (Species) | (Number of lone pairs of electrons on the central atom) |
||
| (A) | XeF2 | (i) | 0 |
| (B) | XeO2F2 | (ii) | 1 |
| (C) | XeO3F2 | (iii) | 2 |
| (D) | XeF4 | (iv) | 3 |
Choose the most appropriate answer from the options given below:
Concept: undefined >> undefined
Which one of the following reactions of xenon compounds is not feasible?
Concept: undefined >> undefined
Given below are two statements:
Statements I: Frenkel defects are vacancy as well as interstitial defects.
Statements II: Frenkel defect leads of colour in ionic solids due to the presence of F-centers.
Choose the most appropriate answer for the statements from the options given below:
Concept: undefined >> undefined
The incorrect statement about the imperfections in solids is ______.
Concept: undefined >> undefined
Which type of ‘defect’ has the presence of cations in the interstitial sites?
Concept: undefined >> undefined
Match List - I with List - II:
| List - I | List - II | ||
| (Species) | (Number of lone pairs of electrons on the central atom) |
||
| (A) | XeF2 | (i) | 0 |
| (B) | XeO2F2 | (ii) | 1 |
| (C) | XeO3F2 | (iii) | 2 |
| (D) | XeF4 | (iv) | 3 |
Choose the most appropriate answer from the options given below:
Concept: undefined >> undefined
Which one of the following reactions of xenon compounds is not feasible?
Concept: undefined >> undefined
If NaCl is doped with 10–3 mol % of SrCl2 calculate the concentration of cation vacancies.
Concept: undefined >> undefined
The correct order of bond strength is ______.
Concept: undefined >> undefined
Among the following ions, which one has the highest paramagnetism?
Concept: undefined >> undefined
Which of the following is not paramagnetic?
Concept: undefined >> undefined
