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Per NCERT §3.7.1(a), the COVALENT RADIUS of a non-metal atom is defined as which quantity?
AAtomic mass × 1 pm
BHalf the distance between two like atoms bound by a single covalent bond (e.g. Cl–Cl 198 pm → r=99 pm)
CThe full bond length
DTwice the bond length
Answer & Solution
Correct answer: B. Half the distance between two like atoms bound by a single covalent bond (e.g. Cl–Cl 198 pm → r=99 pm)
Per NCERT §3.7.1(a), Cl₂ bond = 198 pm → r_Cl covalent = 99 pm. Half the X–X bond length.
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