Chemistry

Question Analysis
This question involves constructing nuclear notation for a charged isotope from proton/neutron counts.
The main focus is on linking protons to atomic number/element identity, protons+neutrons to mass number, and charge to ion notation.

Key Concept Explanation
Protons = atomic number (Z) = 14 → element = silicon (Si, eliminate B/S and D/Ne).
Mass number (A) = protons + neutrons = 14 + 16 = 30 (eliminate C, which uses 16 as A).
Charge = +4 → ion notation = .
Nuclear notation: =

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