IOM 2016, Блиц — Задача 10

Olympiad of Metropolises, Moscow. Blitz Contest, September, 5 · 5 септември 2016 г.

Условие

The valency of which chemical element cannot exceed IV?

Sulfur (S);

phosphorus (P);

nitrogen (N);

chlorine (Cl)?

In the answer, give the relative molecular mass (integer) of the higher oxide of the chosen element.

Решение

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Оригинал в Архива: blitz.pdf