No. of questions - 40
Time - 30 min
3.
The total number of protons present in all the elements upto ′Zn′ in the periodic table is:
4.
In the ground state of the H-atom, the electron is
6.
Two electron in an atm of an element cannot have:
8.
X-rays cannot penetrate through a sheet of:
9.
The de Broglie wavelength associated with a material particle is:
11.
The number of electrons in a neutral atom of an element is equal to its:
12.
The quantum number that is in no way related to other quantum number is:
17.
The wave nature of electron is verified by
18.
The difference between ions and atoms is of:
20.
Threshold wavelength depends upon :
21.
The possibility of finding an electron in an orbital was conceived by:
22.
According to Dalton’s atomic theory, the smallest particle which is capable of independent existence is:
24.
When the azimuthal quantum number has the value of 2, the number of orbitals possible are
25.
The energy of electromagnetic radiation depends on:
26.
The atomic number of an element is 35 and its mass is 81. The number of electrons in its outermost shell is
27.
The atomic number of an element is 17. The number of orbitals containing electron pairs in the valency shell is:
29.
Compared to the lightest atom the heaviest atom weighs:
32.
According to Bohr’s model of hydrogen atom
33.
Which consists of particle of matter?
35.
The ground state term symbol for an electronic state is governed by
38.
Naturally occurring elements are mixtures of:
39.
How many electrons can fit into the orbitals that comprise the 3rd quantum shell?
40.
The orbital with maximum number of possible orientations is:
