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Question
Fill in the blank
An ion which has a positive charge is called a ..................
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Solution
An ion which has a positive charge is called a cation .
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Elements having same mass number but different atomic number
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Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.
Phosphorus – \[\ce{^31_15P}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
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What is its atomic number?
