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