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