1.

Calculate the number of electrons protons and neutrons present in 81g of al^3+

Answer»

Firstly we write the Atomic Number of ALUMINUM atom ,that is 13

so

Number of PROTON =13

Number of Electron =13

Number of NEUTRON =14

Then

According to question 3 ELECTRONS are remove so ,

Number of Proton=13

Number of Electron =13-3=10

Number of Neutron=14



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