an ion has three neutrons, four protons, and a charge of positive one. How many electrons are there in the ion?

A neutral atom has same number of protons and electrons. Ions dont have the same numbers, if a ion is negative it has more electrons than protons, if a ion is positive it has less electrons than protons.

Then a ion with a charge of positive one, 1 electron less than the number of protons. It has 4 protons so the number of electrons in the ion is 3

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donotbeidle donotbeidle · Answer 2 · 2019-09-30T10:31:57+02:00

Answer:

We identify an element from its atomic number = number of protons

So here the atomic number is 4 since it says 4 protons present.

The element is Berylllium, Be.

For a neutral atom atomic number = number of protons (positively charged) = number of electrons(negatively charged)

So the neutral atom contains 3 neutrons, 4 protons and 4 electrons.

Mass number = number of protons + neutrons

Since mass of an atom depends on the nucleus (protons and neutrons are present inside the nucleus)

Mass number = 3 + 4

Mass number=7.

The ion has 1+ charge which means the neutral atom has lost 1 negative electron.

So The answer is

Ion has 3 neutral neutrons

4 positive protons

3 negative electrons