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