The elements that gain two electrons when they react are the ones found in group 14 of the Periodic Table. Oxygen is a good example of such elements.
Atoms of the halogen family gain 1 electron when they react.
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Example: oxygen
any of the elements in group 6 would easily gain two elections to complete the outer most level of the electron cloud. Any element in group ten would easily lose two electrons.
Magnesium, calcium, alkaline, and radium lose 2 electrons when they react. Barium, beryllium, and strontium also lose 2 electrons when they react.
The group II metals: magnesium, calcium, etc. They have two electrons in their valence shell and it is very easy for them to give up these two electrons.
Carbon, Silica and any element below those in a periodic table
Example: oxygen
Think alkaline earth metals
HE
When the element bonds with another element it accepts electrons (it does not give them away) and becomes negatively charged.
The element, Helium (He) is one of the "Noble Gas" elements. They are by definition, Inert. Its Valence Electron Shell is full, and it has no 'desire' to combine with another.
Sodium can be combined with the majority of other elements to form compounds; another chemical element cannot be obtained by chemical reactions.
No elements combine to produce carbon. Carbon is an element in and of itself.
It would form a compund. For example, the most famous coumpoud is H2O. This compound is made out of two Hydrogen molecules and one oxygen.
Because they determine how the element will combine with other elements
elements combine to attain more stability, generally by attaining the electronic configuration of the nearest noble gases. they do so by donating electrons, accepting electrons or by sharing electrons
An element reacts with another element by sharing electrons. The elements keep sharing electrons until both elements have a full outer shell.
The number of valence electrons an element atom contains will determine its chemical properties.
The valency of an element measures its ability to combine with other elements. This valency is determined by the number of electrons in the outer shell of each atom of an element.
elements combine because no body noes :DBecause elements become ions then combine
When the element bonds with another element it accepts electrons (it does not give them away) and becomes negatively charged.
Neon, an element, is a noble gas and is stable as it has it correct number of electrons in its outermost shell (8). It does not combine readily with other elements.
The element, Helium (He) is one of the "Noble Gas" elements. They are by definition, Inert. Its Valence Electron Shell is full, and it has no 'desire' to combine with another.
Sodium can be combined with the majority of other elements to form compounds; another chemical element cannot be obtained by chemical reactions.
When an element enters into a compound, a chemical reaction occurs. This means that the elements chemically combine and sub-atomic particles transfer between the elements involved. An Example of a Compound: Sodium Chloride (Table Salt): Sodium + Chlorine --> Sodium Chloride
When an atom of one element is brought in contact with an atom of another element, electrons get transferred from one element to another. However, if the atoms of same element come together then electrons are shared and not transferred. Exception to this is elements in noble gases.