The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom?
Li2+ (n = 2)
Li2+ (n = 3)
Be3+ (n = 2)
He+ ( n = 2)
Which of the following set of quantum numbers represents the highest energy of an atom?
n =3, l=2, m=1, s= +1/2
n=4, l=0, m=0, s= -1/2
n=3, l=0, m=4, s= +1/2
n=3, l=1, m=1, s=+1/2
Which of the following electron has minimum energy?
n = 4; l = 0; m= 0; s = +
n= 4; l= 1; m = ±1; s = +
n = 5; l = 0; m = 0; s = +
n = 3; l = 2; m = -2; s = +
How many emission spectral lines are possible when hydrogen atom is excited to nth energy level?
C.
Number of spectral lines =.
n is the orbital in which the elctrons exist.
Which of the following corresponds to the energy of the possible excited state of hydrogen?
-13.6 eV
13.6 eV
-3.4 eV
3.4 eV
The correct order of the spin only magnetic moment of metal ions in the following low spin complexes, [V(CN)6]4-, [Fe(CN)6]4-, [Ru(NH3)6]3+ and [Cr(NH3)6]2+ is
V2+ > Cr2+ > Ru3+ > Fe2+
V2+ > Ru3+ > Cr2+ > Fe2+
Cr2+ > V2+ > Ru3+ > Fe2+
Cr2+ > Ru3+ > Fe2+ > V2+
Which one of the following about an electron occupying the 1s orbital in a hydrogen atom is incorrect? (The Bohr radius is represented by a0).
The electron can be found at a distance 2a0 from the nucleus.
The probability density of finding the electron is maximum at the nucleus.
The total energy of the electron is maximum when it is at a distance a0 from the nucleus.
The magnitude of the potential energy is double that of its kinetic energy on a an average.