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To be short and concise <u>a chemical bond</u> is the attraction between atoms that allows the creation of chemical compounds.
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It depends on the plant you have. when you buy a new plant it usually has instructions so you would follow. Hope it helps!!!
To protect the patents of those they work . Patents are legal rights of ownership to something that you have made or created.
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Larger gases produces more spectral lines than the smaller gases because they have more orbitals in their atoms.
Hydrogen has only one orbital in which an electron orbits. At the excited state, that is, when the electron gains energy, the number of energy level it can transcend is very few. For larger elements, they have more orbitals and when excited, they can move from the ground state to other energy levels at which they produce various unique spectral lines.