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In which of the following belong to a category called the main group of elements? nonmetals. transition elements. halogens. alkali metals. it can be more than one answer!
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The ammonia molecule in the diagram has the observed bond orientation because
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Rhenium (re) is made up of 37.4% 185re and 62.6% 187re. the atomic mass of 185re is 184.953 amu. the...
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