Welcome to your Atomic Struscture
1.
Millikan’s oil drop method is used to determine
2.
Set of isoelectronic species is:
3.
Ratio of radii of second and first Bohr orbits of H-atom
4.
To explain the structure of atom the first use of quantum theory was made by
5.
Which element has least number of electrons in M-shell?
6.
The atomic number of an element is 17. The number of orbitals electron pairs in its valence shell is:
7.
Which forms a colourless solution in aqueous medium?
8.
Angular momentum of electron in Bohr orbit:
9.
Which one of the following expressions represents electron probability function D?
10.
The correct set of quantum numbers is:
11.
An element has 2 electrons in K-shell, 8 in L-shell, 13 in M-shell and 1 electron in N-shell. The element is:
12.
Outermost configuration of most electronegative element is:
13.
Set of isoelectronic species is:
14.
Configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ represents:
15.
Effective magnetic moment of Sc³⁺ ion is:
16.
Quantum numbers of an atom can be defined on basis of:
17.
The values of four quantum numbers of an electron of an element are n = 4, l = 0, m = 0, s = +1/2. The element is:
18.
Dual nature of particles was given by:
19.
Wavelength of spectral line emitted is inversely proportional to
20.
Correct representation for d-orbital is:
21.
Dual nature of particles was given by:
22.
Which relates to photons both as waves & particles?
23.
Atomic number of element is 35. What is the total number of electrons present in all p-orbitals of the ground state atom?
24.
In which orbital is angular momentum of electron zero?
25.
Most probable radius (pm) of electron in He⁺ is:
26.
Which gives CO₂ with NaHCO₃: Acetic acid, phenol, n-hexanol?
27.
To explain the structure of atom the first use of quantum theory was made by
28.
The values of four quantum numbers of an electron of an element are n = 4, l = 0, m = 0, s = +1/2. The element is:
29.
Quantum numbers +½ and –½ represent:
30.
Rutherford’s experiment used:
31.
Chromium is represented by configuration
32.
Atomic number of element is 35. What is the total number of electrons present in all p-orbitals of the ground state atom?
33.
Configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s¹ represents:
34.
The incorrect configuration is
35.
What is the packet of energy called?
36.
The radius of hydrogen atom is 0.53 Å. The radius of Li²⁺ ion is:
37.
When potassium metal is exposed to violet light:
38.
Standard for atomic mass is:
39.
Benzoic acid to benzene: X? Phenol to benzene: Y?
40.
Millikan’s oil drop method is used to determine
41.
Which of the following pairs are both ions coloured in aqueous solution?
42.
Total energy of the electron in first orbit of hydrogen atom is:
43.
Number of orbitals in L energy level
44.
Which of the following is not possible?
45.
Preparation of ethyl acetoacetate involves?
