Answered

Compared to an atom of phosphorus-31, an atom of sulfur-32 contains

(1) one less neutron (3) one more neutron

(2) one less proton (4) one more proton

Verified Answer :

Answer;

(2) one less proton

Explanation;

-Sulfur-32 is an isotope of sulfur that contains 16 protons, 16 electrons and 16 neutrons. Since the mass number is the sum of protons and neutrons then its mass number is 32.

-On the other hand, phosphorus-31 which is an isotope of phosphorus, contains 16 neutrons, 15 protons and 15 electrons, thus its mass number is 31.

-Therefore; Phosphorus has 1 less proton and electron than sulfur in this case because the number of protons are equal to the number of electrons in the element.

Answer:

One less proton.

Explanation:

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