dinosaurs

how is the compound (MgCl2) is formed ? and what it's type of bond?

• lose and gain , covalent bond

• sharing electrons , covalent bond

• sharing electrons , ionic bond

• lose and gain , ionic bond

what effects the strength of the attraction of each atom to it's electrons ?

• Type of element

• size of the atom, charge of nucleus ,number of electrons

• number of electrons only

• type of energy

example of polar molecule

• H2O

• CH4

• CO2

• O3

To write a chemical formula you need to know ..

• the number of electrons they gain , lose or share to become stable

• elements oxidation number

• electrons involved

• how many valence electrons the atom have

what types of compounds are easy to write formulas for ?

• binary compound

• covalent compound

• ionic compound

What forms as a result of electrons sharing ?