How many neutrons are in iodine-127.?

Answer 1

Refer to the Periodic Table.

Iodine has atomic Number of 53. This tells us that there are 53 protons in the nucleus.

I-127 is the Atomic Mass.

The figure is the total of all the protons and neutrons in the nucleus of the atom.

So the total number of neutrons will be 127 - 53 = 74 neutrons.

Answer 2

I-125 contains 73 neutrons.

To calculate the number of protons, electrons, and neutrons in an uncharged isotope, follow these rules:

Protons = atomic number

Electrons = protons = atomic number

Neutrons = atomic mass - protons

Iodine is number 53 on the periodic table, so its atomic number is 53. It has 53 protons and 53 electrons. This particular isotope of iodine is I-125. So, it has 125-53=72 neutrons.

Answer 3

53 protons

72 neutrons

53 electrons (if non-ionic)

Answer 4

Number of neutrons = Mass number - Atomic number = 129 - 53 = 76

Answer 5

53 protons

53 electrons

72 neutrons

Answer 6

Iodine has 53 electrons. I- ion is formed when one electron is added to iodine atom. So I- (or iodide ion) has 54 electrons.

Answer 7

Iodine-127 has 74 neutrons.

Answer 8

Iodine always has 53 protons.

Answer 9

53 protons and 72 neutrons

Answer 10

Iodine-127 has 74 neutrons.