Ni 2+...............this does not help at all
+2
This atom become a cation with the electrical charge +2.
This depends on the elemnts involved. The simple model of electron transfer to create octets is useful. In a cation with a charge of +1 one electron is lost, +2 two electrons etc. For anions when the charge is -1 one electron is gained, -2 two electrons gaine etc.
Yes, calcium has valence electrons - two, in fact (it is a divalent chemical element).
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.
A neutral calcium atom that loses two electrons has a +2 charge.
because it will have more electrons add electrons= add charge
+2 is the charge represented Cu2+
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.
When "x" valence electrons are lost the charge is +x When "x" valence electrons are gained the charge is -x for example, if chlorine gained one electron, the charge would be Cl 1- or, if magnesium lost two electrons, the charge would be Mg 2+
True, it lost its only two electrons, which makes it consist of 2 protons and 2 neutrons
two
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.
This atom become a cation with the electrical charge +2.
It is true
Nickel has 3 (three) electron shells.
Assuming the aluminum is uncharged before the electrons are lost it will be Al3+. In the neutral atom protons (each having +1 charge) equal electrons (-1 charge) and so equal 0, but if one of the values changes and the other is the same the overall charge is the difference between the two numbers.
This depends on the elemnts involved. The simple model of electron transfer to create octets is useful. In a cation with a charge of +1 one electron is lost, +2 two electrons etc. For anions when the charge is -1 one electron is gained, -2 two electrons gaine etc.