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Write the symbol for the element with 30 neutrons and a mass number of A = 56.
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Write the symbol for the element with 30 neutrons and a mass number of A = 56.

User Sam Joseph
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Atomic No.= Mass No.-No.of Neutrons
=56-30
=26
As atomic no. is 26, the element is iron, having symbol Fe.
User Nfvindaloo
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