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well The electrons on that shell have nowhere to go so they jump off and become ionised
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.
The charge of an electron cloud is negative. The electron cloud is made up of electrons, and the electrons are negatively charged. The electron cloud will have a negative charge as well.
An atom that gains or loses valence (outermost shell) electrons is referred to as an ION.
An atom that gains three electrons will become an ion with a 3- charge.
well The electrons on that shell have nowhere to go so they jump off and become ionised
The negative charge of electrons in the inner shell(s) of the atom.
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.
The electrons on the outer shell
The outer shell of an atom is populated by electrons, which have a negative charge. Protons, which have a positive charge hang out in the nucleus of the atom.
Oxygen has 8 electrons (assuming its charge is 0), and in the first shell ("closest" to the nucleus) there are 2 electrons. :)
The electron. The electron is has a negative charge. The more electrons that are in a valence shell of the atom the more negative the atom will be.
A free electron is able to move as it is in the outer shell of the atom. So free electrons can carry a charge. If an atom has free electrons it is able to conduct electricity. Inner shell electrons cannot carry a charge as they are closer to the nucleus.
The charge of an electron cloud is negative. The electron cloud is made up of electrons, and the electrons are negatively charged. The electron cloud will have a negative charge as well.
An atom that gains or loses valence (outermost shell) electrons is referred to as an ION.
An atom that gains three electrons will become an ion with a 3- charge.
it will have a negative charge. Neutrons are neutral, protons are positive and electrons are negative. an atom will have the same amount of protons and electrons to make the whole thing neutral. adding more electrons if give the atom a negative charge as there isn't enough protons in the atom to counteract the electrons. it do this an atom must already have 5-7 electrons in its outer shell as they are looking to fill there outer shell with 8 electrons. atoms with 1-3 electrons in its outer shell will get rid of them. group 4 doesn't make ions very well as 4 electrons would take too much energy to lose or gain, however there are exceptions. group 8 or 0 doesn't make ions either as they already have filled there outer shell and are stable.