Not sure...maybe
It means that the atom being discussed is an isotope of iron that has a mass number of 57, which means that the atom has 31 neutrons.Added:It is the 3rd most abundant Fe isotope after Fe-56 and -54.
60 is abundant.
If a number is not abundant it cannot be made abundant!
72 is an abundant number.
67 is an abundant number.
abundant
No, 29 is not an abundant number.
abundant
350 is an abundant number.
The opposite of -57 is 57. The opposite of a number is the number with the same absolute value but with an opposite sign.
57 is a rational number
57 is an odd number.