Consider the following set of quantum numbers.
n | 1 | m$$_1$$ | |
---|---|---|---|
A. | 3 | 3 | $$ - $$3 |
B. | 3 | 2 | $$ - $$2 |
C. | 2 | 1 | +1 |
D. | 2 | 2 | +2 |
The number of correct sets of quantum numbers is __________.
BeO reacts with HF in presence of ammonia to give [A] which on thermal decomposition produces [B] and ammonium fluoride. Oxidation state of Be in [A] is ____________.
When 5 moles of He gas expand isothermally and reversibly at 300 K from 10 litre to 20 litre, the magnitude of the maximum work obtained is __________ J. [nearest integer] (Given : R = 8.3 J K$$-$$1 mol$$-$$1 and log 2 = 0.3010)
A solution containing 2.5 $$\times$$ 10$$-$$3 kg of a solute dissolved in 75 $$\times$$ 10$$-$$3 kg of water boils at 373.535 K. The molar mass of the solute is ____________ g mol$$-$$1. [nearest integer] (Given : Kb(H2O) = 0.52 K kg mol$$-$$1 and boiling point of water = 373.15 K)