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