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any different samples of a chemical compound will be made of the same elements (will have the same elemental composition), and these elements will be present in the same proportions.
a lobe-shaped orbital in which electrons may move. There are 3 p orbitals per energy level from...
the tail gas is the mixture of gases left over and discarded at the end of the industrial...
a crystal lattice of positive kernels in a sea of delocalised electrons to which they are...
a process whereby molecules combine automatically to form new ions as in the case of water.