How many protons, neutrons, and electrons does the atom 39 K have?

The atom described is potassium (K) with an atomic number of 19 (indicating 19 protons and 19 electrons in a neutral atom) and a mass number of 39 (indicating the sum of protons and neutrons is 39). Subtracting the number of protons (19) from the mass number (39) gives 20 neutrons.

How many protons, neutrons, and electrons does the atom 39 K have?

The atom described is potassium (K) with an atomic number of 19 (indicating 19 protons and 19 electrons in a neutral atom) and a mass number of 39 (indicating the sum of protons and neutrons is 39). Subtracting the number of protons (19) from the mass number (39) gives 20 neutrons.

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How Many Protons, Neutrons, and Electrons Does the Atom ³⁹K

Question 18

Multiple Choice

How many protons, neutrons, and electrons does the atom ³⁹K have?

A) 20 protons, 19 neutrons, 20 electrons
B) 19 protons, 19 neutrons, 39 electrons
C) 20 protons, 20 neutrons, 19 electrons
D) 19 protons, 19 neutrons, 19 electrons
E) 19 protons, 20 neutrons, 19 electrons

Correct Answer: