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OverLord2011 [107]
3 years ago
9

The mass number of iodine is 126, and it’s in the 53rd place in the periodic table. It has ___ protons and ___ neutrons

Biology
2 answers:
sesenic [268]3 years ago
6 0

<u>Answer;</u>

53 protons

73 neutrons

The mass number of iodine is 126, and it’s in the 53rd place in the periodic table. It has <u>73 </u>protons and<u> 53</u> neutrons.

<h3><u>Explanation;</u></h3>
  • <em><u>The mass number of an element is the sum of the number of protons and the number of neutrons in the nucleus of an atom of the element.</u></em>
  • <em><u>Therefore, the mass number of Iodine is 126, which means the sum of its protons and neutrons is 126.</u></em>
  • <em><u>Atomic number of an atom on the other hand is the number of protons in the nucleus of the atom. The atomic number of Iodine is 53 , which means its nucleus has 53 protons.</u></em>
  • Thus, <em><u>to get the number of neutrons we subtract the atomic number from the mass number, which will be 73 neutrons.</u></em>
igomit [66]3 years ago
3 0
It has 53 protons and 73 neutrons.

(Neutrons: 126-53 = 73)

:)
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