Question 1 unsaved an atom of an element with atomic number 48 and mass number 120 contains question 1 options: 72 protons, 72 electrons, and 48 neutrons. 72 protons, 48 electrons, and 48 neutrons. 120 protons, 48 electrons, and 72 neutrons. 48 protons, 48 electrons, and 72 neutrons.

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Chemistry

4 September, 01:46

Question 1 unsaved an atom of an element with atomic number 48 and mass number 120 contains question 1 options: 72 protons, 72 electrons, and 48 neutrons. 72 protons, 48 electrons, and 48 neutrons. 120 protons, 48 electrons, and 72 neutrons. 48 protons, 48 electrons, and 72 neutrons.

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Makenzie Holland · Answer 1

Atomic number is 48, and shows the number of protons, and electrons.

Correct answer is 48 protons, 48 electrons, and 72 neutrons.

You can check the number of neutrons.

Mass number = number of protons + number of neutrons.

120=48 + number of neutrons

number of neutrons = 120 - 48 = 72