Question

An element ‘X’ has the same number of protons, electrons and neutrons, andits atomic mass is double the atomic number. If the number of neutrons is 20,then the element ‘X’ is__
Ca
Mg
Zn


Ne

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Answer 1

Answer:

ne

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Explanation:

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Answer 2

Answer:

An element ‘X’ has the same number of protons, electrons and neutrons, andits atomic mass is double the atomic number. If the number of neutrons is 20,then the element ‘X’ is__ ca