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Question
The atom of an element X has 18 protons, 22 neutrons and 18 electrons. The atomic number of the element is _______.
The atom of an element X has 18 protons, 22 neutrons and 18 electrons. The atomic number of the element is _______.
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Solution
The correct option is A 18
The atomic number of an element is the number of protons found in the nucleus of an atom of that element. It is conventionally represented by the symbol Z. So, the atomic number of X is 18.
The atomic number of an element is the number of protons found in the nucleus of an atom of that element. It is conventionally represented by the symbol Z. So, the atomic number of X is 18.
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