Question

How many protons are in Iodine - 127? 53 protons and 74 neutrons 127 neutrons and 53 protons 127 protons and 53 neutrons 53 neutrons and 74 protons

Answer 1

Iodine-127 has 53 protons, 74 neutrons, and as an anion with a 1- charge, it has 54 electrons.

Step-by-step explanation:

The number of protons in Iodine-127 is 53. This is because the atomic number of iodine is 53, which indicates the number of protons in the nucleus of any iodine atom. To find the number of neutrons, you subtract the atomic number from the mass number: 127 - 53 = 74 neutrons. For an iodine ion with a 1- charge (an anion), there is an extra electron, resulting in a total of 54 electrons (53 protons - 1- = 54 electrons).

Answer 2

Step-by-step explanation:

By definition the atomic number of an atom or element is the number of protons, while the mass number is equal to the number of protons plus the neutrons.

atomic number = n° of protons

mass number = n° of protons + n° of neutrons

We have to identify the number of protons and the number of neutrons in iodine-127. If we look for the atomic number in the periodic table we will see that the atomic number of iodine is 53. And the mass number is the one that we are given: 127.

We can use both values to get the number of protons and neutrons

atomic number = 53 = n° of protons

n° of protons = 53

mass number = 127 = n° of protons + n° of neutrons

n° of neutrons = mass number - n° of protons

n° of neutrons = 127 - 53

n° of neutrons = 74

Answer: 53 protons and 74 neutrons