Question

If a neutral copper atom becomes an ion that has a charge of 2+, how many electrons does the resulting ion have?
a31
b27
c29
d28

Answer 1

It seems to me to be b!<3

Answer 2

The resulting copper ion has 27 electrons.

Copper ions:

The Copper atom has an atomic number 29.

This means that the neutral Copper atom has 29 electrons and 29 protons.

Now, the copper ion with 2+ charge means that the copper ion has an extra positive charge. This extra positive charge is due to the loss of electrons.

When the copper atom loses electrons, the number of electrons in the atom is less than the number of protons, therefore, the charges are not balanced.

For a copper ion with 2+ charge, the neutral copper atom must has lost 2 electrons.

So, now the copper has 29 - 2 = 27 electrons.

The resulting ion has 27 electrons and 29 protons.

Learn more about ions:

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