Question 1 :
If mass number is 24 and number of protons is 12, then find number of neutrons.
Question 2 :
Thomson proposed the model of an atom to be similar to that of a Christmas pudding. TRUE OR FALSE?
Question 3 :
If mass number is 24 and number of protons is 12, then find number of electrons.
Question 4 :
The mass of an atom of any natural element is taken as the average mass of all the naturally occuring atoms of that element. TRUE OR FALSE?
Question 5 :
If mass number is 24 and number of protons is 12, then find atomic number.
Question 6 :
Which one of the following is a correct electronic configuration of sodium?
Question 7 :
Mass of neutron is nearly equal to that of electron. TRUE OR FALSE?
Question 8 :
If mass number is 2 and number of proton is 1, then find atomic number.
Question 10 :
If atomic number is 9 and number of neutrons is 10, then find number of electrons.
Question 11 :
Atoms tend to achieve an octet in the outermost shell by sharing, gaining or losing electrons. TRUE OR FALSE?
Question 12 :
If an atom contains one electron and one proton, will it carry any charge?
Question 13 :
Atoms of the same element, having the same atomic number but different mass numbers are called?
Question 15 :
An isotope of cobalt is used as a fuel in nuclear reactors.TRUE OR FALSE?
Question 18 :
If atomic number is 16, mass number is 32 and name of atomic species is Sulphur then find number of protons.
Question 20 :
If mass number is 1, number of neutrons is 0, number of protons is 1 and number of electrons is 1 then find atomic number.
Question 22 :
If mass number is 1, number of neutrons is 0, number of protons is 1 and number of electrons is 1 then find name of atomic species.
Question 23 :
If mass number is 2 and number of proton is 1, then find name of the atomic species.
Question 24 :
If Z = 3, what would be the valency of the element? Also, name the element.
