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light nuclei join together to form heavier nuclei.
the levels of energy in which electrons move and which have fixed amounts of energy.
to break apart.
water containing salts of magnesium and calcium.
6,02 x 1023 particles or objects. Also known as the number of particles in one mole...
forces of attraction between non-polar molecules (H2; CH4 ) or the atoms of a monatomic gas...