Atomic Structure Questions

What is the maximum number of orbitals that can be identified with the following quantum numbers? n = 3, l = l, ml = 0

Calculate the energy in joule corresponding to light of wavelength 45 nm : (Planck′s constant h = 6.63 × 10-34 Js; speed of light c = 3 × 108 ms-1)...

The species Ar, K+ and Ca2+ contain the same number of electrons. In which order do their radii increase ?

Which of the following pairs of ions are isoelectronic and isostructural ?

Which of the following is the most correct electron displacement for a nucleophilic reaction to take place?

The number of d-electrons in Fe2+ (Z = 26) is not equal to the number of electrons in which one of the following?

Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii ? (Nubmers in the parenthesis are atomic numbers).

The angular momentum of electron in ′d′ orbital is equal to :-

Which of these statements about [Co(CN)6]3-is true :-

Which of the following pairs of compounds is isoelectronic and isostructural ?

Which one is the wrong statement ?

It is because of inability of ns2 electrons of the valence shell to participate in bonding that:-

Nutural rubber has:

The electronic configurations of Eu (Atomic no. 63), Gd (Atomic NO. 64) and Tb (Atomic No. 65) are:

Two electrons occupying the same orbital are distinguished by:

The pair of electron in the given carbanion, CH3C ≡C⊝is present in which of the following orbitals?...

How long (approximate) should water be electrolysed by passing through 100 amperes current so that the oxygen released can completely burn 27.66 g of diborane ? (Atomic weight of B = 10.8 u)...

Total number of lone pair of electrons in I3- ion is

Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s2 2s2 2p3, the simplest formula for this compound is...

Iron exhibits bcc structure at room temperature. Above 900°C, it transforms to fcc structure. The ratio of density of iron at room temperature to that at 900°C (assuming molar mass and atomic ...