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प्रश्न
The number of electrons in an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of the element?
विकल्प
`""_15^13"X"`
`""_31^16"X"`
`""_16^15"X"`
`""_15^16"X"`
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उत्तर
`""_15^13"X"`
Explanation -
Number of electrons = 15,
Number of neutrons = 16
Hence an atomic number of element X is 15 and the atomic mass is 31. Hence the element is represented as `""_15^13"X"`
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