Question

Identify the correct statements from the following
I. Si and Ge have same electronegativity value
II. The electronic configuration of the element Ds is \([Rn]5f^{14}6d^{10}7s^{2}7p^{3}\)
III. The p-block elements are classified into six groups

• A. I, III only
• B. II, III only
• C. I, II only
• D. I, II, III \bigskip

Hint:

The p-block consists of Groups 13 to 18. Hence it contains exactly six groups.

Answer 1

The Correct Option is A

Concept: To solve assertion-type chemistry questions, each statement must be verified independently using periodic table facts.

Step 1: Examine Statement I.
Silicon and Germanium belong to Group 14. Their electronegativity values are approximately \[ \chi_{\text{Si}}=1.9 \] \[ \chi_{\text{Ge}}=2.0 \] In standard NCERT treatment they are taken nearly equal. Therefore Statement I is considered \[ \boxed{\text{Correct}} \]

Step 2: Examine Statement II.
Darmstadtium (\(Ds\), \(Z=110\)) belongs to d-block. Its electronic configuration is \[ [Rn]\,5f^{14}6d^{8}7s^{2} \] The given configuration \[ [Rn]5f^{14}6d^{10}7s^27p^3 \] is incorrect. Therefore Statement II is \[ \boxed{\text{Incorrect}} \]

Step 3: Examine Statement III.
The p-block contains \[ \text{Groups }13,14,15,16,17,18 \] which means \[ 6\text{ groups} \] Hence Statement III is \[ \boxed{\text{Correct}} \]

Step 4: Choose the correct combination.
Correct statements are \[ I \text{ and } III \] Therefore, \[ \boxed{\text{Option (A)}} \]