Q (1): Assertion : Anions are larger in size than the parent atom.

  Reason : In an anion, the number of protons in the nucleus is less than the number of electrons moving around it

  Q (2): Assertion : Isobars are identical in chemical properties.

  Reason : Isobars have same atomic number.

  Q (3): Assertion : No. of electrons always equal to the proton no. of atom.

  Reason : Atom is always made-up of proton and electron.

  Q (4): Assertion : Isotopes are electrically neutral.

 Reason : Isotopes of an element have equal number of protons and electrons.

  Q (5): Assertion : The size of the nucleus is very small as compared to the size of the atom.

  Reason : The electrons revolve around the nucleus of the atom

  Q (6): Assertion : No. of electrons always equal to the proton no. of atom.                                    

Reason : Atoms are always made up of proton, electron, and neutron.

  Q (7): Assertion : Atom is electrically neutral.

Reason : A neutral particle, neutron is present in the nucleus of atom.

  Q (8): Assertion : No. of electrons always equal to the proton no. of atom.

Reason : Same no. of proton and electron present in atom makes it stable.

  Q (9): Assertion : Isotopes are electrically neutral.

  Reason : Isotopes are species with same mass number but different atomic numbers

  Q (10): Assertion : The mass of the total number of protons and neutrons is a measure of the approximate mass of an atom.

Reason : The mass of an electron is negligible.

  Q (11): Assertion : Electrons moving in the same orbit will lose or gain energy.

 Reason : On jumping from higher to lower energy level, the electron will gain energy

Q (12): Assertion : Electrons can easily remove off but not proton.

   Reason : Electrons are more delicate than proton.

  Q (13): Assertion : Electrons can easily remove off but not proton.

  Reason :Protons are stronger than neutron.

  Q (14): Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.

  Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.

  Q (15): Assertion : For noble gases, valency is zero.

Reason : Noble gases have 8 valence electrons.