Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
when energy is added to an electron in the lowest energy state (the ground state) and it jumps to a vacant orbital of slightly higher energy in the atom
the movement of particles from an area of higher concentration to an area of lower concentration...
a polymer used in manufacture of synthetic resins, fibres and plastics.
there are not enough electrons to contribute to an ordinary covalent bond.
a bond between two or more non-metals that share electrons.
ratio of atoms is 1 : 4 with a bond angle of 109,50 example CH4