Question

A particle contains 34 protons, 45 neutrons and 36 electrons. Which symbol is correct for this particle?

Answer 1

Explanation:

sorry i cant explain it

Answer 2

Answer:

While the number nuclear protons as given is 34, and therefore we deal with the element selenium, there are 2 more electrons than protons, and therefore this species has an overall 2− charge. We represent this selenide ion as Se2− .

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