What is the total number of neutrons in an atom of 57/26 fe? a-83b-57c-26d-31

Answer : The correct option is, (d) 31

Explanation : The given atom is,

Given :

Atomic mass number = 57

Atomic number = 26

Atomic number = Number of protons = Number of electrons = 26

Now we have to calculate the number of neutrons.

Number of neutrons = Atomic mass number - Atomic number

Number of neutrons = Atomic mass number - Atomic number = 57 - 26 = 31

Hence, The total number of neutrons present in an atom of is, 31 neutrons.

the answer would be a

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.