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What element has 53 protons and 74 neutrons?

Question:

What element has 53 protons and 74 neutrons?

Atomic Number and Atomic Mass:

Atomic numbers are the number of protons in an atom. It is always a whole number. Elements on the periodic table are arranged by increasing atomic number. The sum of the number of protons and the number of neutrons in an atom's nucleus is its mass number. In an atom, the mass number is a whole number also.

Answer and Explanation: 1

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Iodine has 53 protons and 74 neutrons. The mass number of this isotope is:

53 + 74 = 127 AMU

We can write this isotope of iodine as I-127. Iodine's...

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P-Block Elements on the Periodic Table: Properties & Overview

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Chapter 28 / Lesson 33
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Learn about the P-Block on the Periodic Table by exploring where they are found on the periodic table, their properties, and what the P-Block elements are.


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