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when a nucleus is unstable and emits particles and energy.
sulfur dioxide is extremely soluble in water, forming sulfurous acid. This acid oxidises to form...
calculating the volume of a substance when the volume of another substance is given.
the transfer of electrons from one atom to another atom to form positive and negative ions...
molecule which generally contains carbon atoms. There are some exceptions including CO2 , HÂ...
a pair of electrons shared between two atoms in a covalent bond.