No. of questions - 40
Time - 30 min
1.
The atomic number of an element is 35 and its mass is 81. The number of electrons in its outermost shell is
5.
Threshold wavelength depends upon :
6.
Compared to the lightest atom the heaviest atom weighs:
9.
The wave nature of electron is verified by
11.
The number of electrons in a neutral atom of an element is equal to its:
13.
The atomic number of an element is 17. The number of orbitals containing electron pairs in the valency shell is:
15.
Naturally occurring elements are mixtures of:
16.
In the ground state of the H-atom, the electron is
18.
X-rays cannot penetrate through a sheet of:
19.
The ground state term symbol for an electronic state is governed by
20.
According to Bohr’s model of hydrogen atom
22.
The total number of protons present in all the elements upto ′Zn′ in the periodic table is:
23.
The quantum number that is in no way related to other quantum number is:
24.
Two electron in an atm of an element cannot have:
27.
How many electrons can fit into the orbitals that comprise the 3rd quantum shell?
29.
The de Broglie wavelength associated with a material particle is:
30.
The possibility of finding an electron in an orbital was conceived by:
31.
When the azimuthal quantum number has the value of 2, the number of orbitals possible are
32.
According to Dalton’s atomic theory, the smallest particle which is capable of independent existence is:
35.
The difference between ions and atoms is of:
37.
Which consists of particle of matter?
38.
The energy of electromagnetic radiation depends on:
40.
The orbital with maximum number of possible orientations is:
