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