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Use the periodic table of elements below to answer the following question.

A scientist has compiled the table below to show the composition of an unknown atom.

Number of Protons ------- Number of Neutrons --------- Number of Electrons
15 ------------------------------------ 16 --------------------------------- 15



(1 point)
Responses

Sulfur
Sulfur

Silicon
Silicon

Nitrogen
Nitrogen

Phosphorus

1 answer

To determine the identity of the unknown atom, we need to look at the number of protons it possesses. The number of protons in an atom defines its element.

According to the data provided:

  • Number of Protons: 15
  • Number of Neutrons: 16
  • Number of Electrons: 15

The atomic number of an element is equal to the number of protons. In this case, the atomic number is 15.

Referring to the periodic table, the element with atomic number 15 is phosphorus (P).

Therefore, the correct response is:

Phosphorus