Question

Consider the following statements:
(I) Rutherford name was associated with the development of periodic table.
(II) A metal M having electronic configuration $1s^2,2s^2,2p^6,3s^2,3p^6,3d^{10},4s^1$ is d-block element.
(III) Diamond is not an element.
(IV) The electronic configuration of the most electronegative element is $1s^2,2s^2,2p^5$
Select the correct option.

• A. I, II, IV
• B. I, II, III, IV
• C. II, III, IV
• D. I, III, IV

Answer 1

The correct option is C II, III, IV

(II) The d-block elements have general electronic configuration$(n-1)d^{1-10}n{s}^{1-2}.$ It is configuration of copper which belongs to d-block and group number ${11}^{th}$.
(III) In order for diamond to be a unique element, the molecules that make it up should have a different number of protons than any other element on the periodic table. Since, diamond is just another form of carbon.
(IV) This is the configuration of F (electronegativity = $4.0$) which belongs to p-block and group number ${17}^{th}$.