The mass number of a nucleus is
always less than its atomic number
the sum of the number of protons and neutrons present in the nucleus
always more than the atomic weight
a fraction
Additional Questions
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The inexpensive and commonly used variety of glass is called soda glass. It is called so because |
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The gas used in the manufacture of vanaspati from vegetable oil is |
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The ionic radii of N3-, O2-, F- and Na+ follows the order |
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The graphite rods in the nuclear reactor |
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The first metal used by man was |
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The hydronium ion is |
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The most electropositive elements among the following is |
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The method that cannot be used for removing permanent hardness of water is |
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The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle? |
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The gas used for artificial ripening of green fruit is |
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