Structure of Atom

Consider two radiations of wavelengths 1. 1 = 2000 Å 2. 2 = 6000 Å The ratio of the energies of these two radiations ( E1E2 ) is (Nearest integer).

If shortest wavelength of hydrogen atom in Lyman series is x, then longest wavelength in Balmer series of He+ is:

1. 9x5
2. 36x5
3. x4
4. 5x9

Match the LIST-I with LIST-II

1. A-IV, B-I, C-III, D-II
2. A-IV, B-II, C-III, D-I
3. A-III, B-I, C-IV, D-II
4. A-IV, B-III, C-II, D-I

The Bohr radius of a hydrogen like species is 70.53 pm. The species and the stationary state (n) are respectively (Given : Hydrogen atom Bohr radius is 52.9 pm)

1. Li2+, 3
2. He+, 3
3. He+, 2
4. Li2+, 2

Arrange the following atomic orbitals of multi electron atoms in order of increasing energy. Choose the correct answer from the options given below:

1. C < D < B < A < E
2. B < A < E < C < D
3. E < C < D < B < A
4. E < B < A < D < C

Identify the correct statements from the following : Choose the correct answer from the options given below:

1. A, B and C Only
2. A, B and D Only
3. B, C and D Only
4. A, C and D Only

Which of the following statement(s) is/are true ? Choose the correct answer from the options given below :

1. A, B and C only
2. A and C only
3. C and D only
4. A only

What is the ratio of wave number of first line (lowest energy line) of Balmer series of H atomic spectrum to first line of its Brackett series?

1. 5 : 1
2. 5 : 0.81
3. 5 : 1.75
4. 5 : 27

Which of the following is correct set of 4 quantum numbers of 19th electron in Chromium (Atomic number = 24) in accordance with Aufbau principle?

1. n = 3, l = 2, m = +2, s = + 12
2. n = 3, l = 2, m = -2, s = + 12
3. n = 4, l = 1, m = 0, s = + 12
4. n = 4, l = 0, m = 0, s = + 12

The species having identical radii according to the Bohr's theory are : Choose the correct answer from the options given below :

1. A and C Only
2. A and E Only
3. B and E Only
4. C and D Only