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This atom become a cation with the electrical charge +2.
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What is the number of electrons a calcium atom must gain or lose to have 8 valence electrons?
two electron should be lost
What ions came from an atom that lost two electrons?
It would be +2. Calcium would be an example
What are the two particles called in the centre of an atom?
Nucleus (and it consists of protons and neutrons).
How are electrons shared in a nonpoler covalent bond?
Two electrons shared in the middle of two atom-bodies is called covalent, which is the same as 'non-polar'.
How many valence electrons does an atom of barium possess?
A barium atom has two valence electrons.
Which electrons in a magnesium atom are most likely to be lost?
Magnesium atoms have two electrons in their outer shell; it is these that will be lost, to turn the Mg atom into an Mg2+ ion.
Are electrons in group 2 lost or gained?
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.
What is the chemical symbol for a magnesium atom that has loss two electrons?
The chemical symbol for a magnesium atom that has lost two electrons is Mg2+.
What happens in an ionic bond?
One atom has lost electrons . And the other atom has gained electrons.
What is the number of electrons a calcium atom must gain or lose to have 8 valence electrons?
two electron should be lost
An atom that has gained or lost electrons and thus carries an electrical 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.
What happened to the iron atom when chemical reaction occurred and an iron atom become the ion Fe?
Two or three electrons are lost.
What are the two particles which make up an atom called?
protons and electrons
What is the charge on an atom of copper that has lost two electrons and how is this ion represented?
+2 is the charge represented Cu2+
Is the following true or false An alpha particle has a double charge because it is a helium atom that has lost two electrons?
True, it lost its only two electrons, which makes it consist of 2 protons and 2 neutrons
What charge will an atom have if it loses an electron?
As written, there's some ambiguity in the question, but the answer is probably "+2" assuming the atom was neutral to start with and that the two outer-shell electrons were the only electrons lost.
When does an atom become an ion with a charge of 2 plus?
Barium has two electrons in its outermost shell, electrons carrying a negative charge. When the Barium atom becomes an ion, these two electrons are lost. Now the Barium atom has more protons than electrons, meaning a net positive charge of 2.
