The mass number of an atom is equal to
the number of protons
the number of protons and electrons
the number of nucleons
the number of neutrons
Additional Questions
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The maximum number of covalent formed by nitrogen is |
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The formula C6H5-CO-CH3 represents |
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The metal that is usually extracted from sea water is |
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The method of concentrating the ore which makes use of the difference in density between ore and impurities is called |
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The inert gases are ____ in water |
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The molecular formula of phosphorous is |
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The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of |
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The gas present in the stratosphere which filters out some of the suns ultraviolet light and provides an effective shield against radiation damage to living things is |
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The most commonly used bleaching agent is |
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The nucleus of a hydrogen atom consists of |
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