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प्रश्न
The atomic number of an element is 9, it has 10 neutrons. Find the element from the periodic table. What will be its mass number?
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उत्तर
The element is Fluorine
Its mass number A
= n + p
= 10 + 9 = 19
∴Mass number of Fluorine = 19
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संबंधित प्रश्न
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