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Grade: 11 
        How many neutrons are present in bipositive zinc, while A=70
2 years ago

Answers : (1)

Yagnesh Devada
22 Points 
							
@nitin A=mass number is sum of the number protons and neutrons in an atom. 
Z= Atomic Number is the number electron/protons present in an atom(netrual atom will have the same number of protons and electrons). Then to find the number of neutrons:
Mass Number – Atomic Number = No. of Neutrons
70 – 30 = 40 in Zinc atom
No. Neutrons = 40  
2 years ago
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