NEET 2023 Phase 1 · ChemistryResonancePrevious Year Question
Amongst the following, the total number of species NOT having eight electrons around the central atom in its outermost shell is: , , , ,
Answer: (A) 3. \textbf{Answer:} (A) 3 \textbf{Solution:} Octet rule exceptions: and are electron-deficient (incomplete octet: 6 and 4 electrons around the central atom), and has an expanded octet (10 electrons).
- A.3✓
- B.2
- C.4
- D.1
Correct Answer
(A) 3
Solution & Explanation
\textbf{Answer:} (A) 3 \textbf{Solution:} Octet rule exceptions: and are electron-deficient (incomplete octet: 6 and 4 electrons around the central atom), and has an expanded octet (10 electrons). and satisfy the octet. So 3 species do NOT have eight electrons.
🎯
43,000+ questions in हिंदी & English · one-tap toggle
Open →📚Practice all NEET Chemistry PYQs chapter-wise →💡Don't get it? Learn the Chemical Bonding concepts →Practice NEET 2023 Phase 1 Chemistry — free, with instant solutions
43,000+ NEET questions solved step-by-step, chapter-wise, in the MedicNEET app.
More NEET PYQ solutions
ChemFor the ozone (O3) Lewis structure shown in the figure — a central O atom (1) doubly bonded to one terminal O atom (2) and singly bonded to the other terminal O atom (3) — the correct formal charges on the oxygen atoms numbered 2, 1 and 3 respectively are:ChemIdentify the correct answer.ChemThe correct order of decreasing acidity of the following aliphatic acids is:ChemWhich one of the following reactions does NOT belong to Lassaigne's test?ChemHow many products (including stereoisomers) are expected from the monochlorination of 2-methylbutane, (CH3)2CH-CH2-CH3?ChemThe total number of possible isomers (both structural as well as stereoisomers) of cyclic ethers of molecular formula C4H8O is:ChemAmong the given compounds I-III, the correct order of bond dissociation energy of the C-H bond marked with an asterisk (*) is:ChemThe correct order of decreasing basic strength of the given amines is: