The rate at which a substance reacts depends on its
atomic weight
atomic number
molecular weight
active mass
In which of the following nuclear reaction neutrons is emitted?
A.
Among the given reactions, reaction that emit the neutrons is-
Formation of coloured solution is possible when metal ion in the compound contains
paired electrons
lone pair of electrons
unpaired electrons
none of the above
A body of mass 10 mg is moving with a velocity of 100 ms-1. The wavelength of de-Broglie wave associated with it would be (h = 6.63 × 10-34 Js)
6.63 × 10-35 m
6.63 × 10-34 m
6.63 × 10-31 m
6.63 × 10-37 m
When the azimuthal quantum number has the value of 2, the number of orbitals possible are
7
5
0
3
The correct set of four quantum numbers for outermost electron of potassium (Z = 19) is
4, 1, 0,
3, 1, 0,
4, 0, 0,
3, 0, 0,
A body of mass x kg is moving with a velocity of 100 ms-1. Its de-Broglie wavelength is 6.62 × 10-35 m. Hence, x is (h = 6.62 × 10-34 Js)
0.1 kg
0.25 kg
0.15 kg
0.2 kg
The wave number of the spectral line in the emission spectrum of hydrogen will be equal to times the rydberg's constant if the electron jumps from
n =3 to n =1
n = 10 to n=1
n=9 to n=1
n = 2 to n=1