It will be +4 relative to a proton's charge.
The charge on a tin atom that has lost four electrons is 4+.
Such an atom would be neutral - no electric charge.
An atom that carries an electrical charge because it has gained or lost electrons is called an "ion". An atom that has gained one or more electrons, and has a negative electrical charge, is called an "anion". An atom that has lost one or more electrons, and has a positive electrical charge, is called a "cation". The term "ion" is used to refer to both cations and anions collectively or non-specifically.
an ion
They are lost. If it has a plus sign beside the ion charge, that means the atom loses electrons. But if it has a negative sign for the ion charge, that means that the atom gains electrons.
I didn't understand your question but here I go...An ion is an atom that has lost or gained electrons, and now has a positive or negative charge, respectively.A cation is an ion with a positive charge. An atom that lost electrons and now has less electrons than protons.ANDAn anion is an ion with a negative charge. An atom that gained electrons and now has more electrons than protons.
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When atoms (elements) gain or loose electrons, they become Ions. If an atom looses electrons it becomes +1 charge, whereas if an atom gains electrons it becomes -1 charge.
Atoms that carry an electrical charge because they gained or lost electrons are called ions. An atom that has lost electrons will be positively charged, and it is called cation. On the other hand, an atom that has gained electrons will be negatively charged, and it is called anion.
+2 is the charge represented Cu2+
An ion is a charged atom that has gained or lost one or more electrons. An ion has an unequal number electrons and protons giving it either a positive or negative charge.
This atom become a cation with a +2 electrical charge. All atoms have are neutral because the numbers of protons and electrons are equal. When you subtract any number n of electrons, the new charge is +n, just as a general rule.