Per NCERT Problem 2.2, a species with 18 electrons, 16 protons, and 16 neutrons has what symbol?
A³²₁₆S²⁻
B¹⁶₈O
C³²₁₆S
D³⁴₁₈Ar
Answer & Solution
Correct answer: A. ³²₁₆S²⁻
Per NCERT Problem 2.2, Z = 16 ⇒ S; A = 16 + 16 = 32; 18 e − 16 p = 2 extra electrons ⇒ charge −2 ⇒ ³²₁₆S²⁻.
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