Q47 of 55 Page 20

Match species are given in Column I with the electronic configuration given in Column II.

Column I Column II



matching species given in Column I with the electronic configuration given in Column II


(i)Cr -(c)[Ar]3d54s-1


(ii)Fe2+ -(b)[Ar]3d6 4s0


(iii)Ni2+- (a)[Ar]3d8 4s0


(iv) Cu-(d)[Ar]3d104s1 .


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Note: In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.

Assertion (A): All isotopes of a given element show the same type of chemical behaviour.


Reason (R): The chemical properties of an atom are controlled by the number of electrons in the atom.


 49

Note: In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.

Assertion (A): Black body is an ideal body that emits and absorbs radiations of all frequencies.


Reason (R): The frequency of radiation emitted by a body goes from a lower frequency to higher frequency with an increase in temperature.