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