Question

1. Bohr's atomic model can explain --
(A) Spectrum of H only.
(B) Spectrum of atom or ion containing one electron only.
(C) Spectrum of H2 molecules only.
(D) The solar spectrum.
2. X has 17 protons and 20 neutrons, Y has 13 protons and 14 neutrons. What should be the formula of the compound formed by X and Y?
(A) XY2
(B) XY3
(C) Y2X
(D) YX3
3. The radius of the nucleus and the radius of an atom are respectively in the order of --
(A) 10^-10m and 10^-15m.
(B) 10^-15m and 10^-10m.
(C) 10^15m and 10^10m.
(D) 10^10m and 10^15m.
4. S²- contains-
(A) 8 electrons.
(B) 16 electrons.
(C) 18 electrons.
(D) 14 electrons.
5. The ratio of energies of photons of wavelength 3000 Å to 6000 Å is -
(A) 1:2
(B) 2:1
(C) 1:3
(D) 3:1
6. The charge of 1 mol of electron is approximately equal to --
(A) 6.022×10^23 C
(B) 1.602×10^-19 C
(C) 96500 C
(D) 12800 C

​

Answer 1

Answer:

1 ) B

2) (A)

3) (D)

4) (C)

5 (D)

6 (C) I think these are the answers

mark as brainliests answer