An ion with mass number 56 contains 3 units of positive charge and 30.45 more neutrons than electrons .Assign symbol to the ion.

An ion with mass number 56 contains 3 units of positive charge and 30.

1.	An ion with mass number 56 contains 3 units of positive charge and 30.45 more neutrons than electrons .Assign symbol to the ion.
Answer» Solution :Let the no.of electrons in the ION=x `therefore`the no. of the protons=x+3(as the ion has three units positive charge) and the no.of NEUTRONS `=x+(30.4x)/(100)=x+0.304x` Now,MASS NUMBER of ion=Number of protons + Number of neutrons =(x+3)+(x+0.304x) `therefore 56=(x+3)+(x+0.304x)or 2.304x=56-3=53` `x=(53)/(2.304)=23` Atomicnumber of the ion (or element)=23+3=26 The element with atomic number 26 is iron(Fe) and the corresponding ion is `Fe^(3+)`