Question

The table compares some characteristics of two atoms.

"Charged Particles"
Atom Number of Neutrons Mass Number
X 4 7
Y 5 9


Use the table to determine the number of protons for each atom. Then, choose the statement below that is true about the two atoms.
A) Atoms X and Atom Y are in the same family.
B) Atom X is in a column to the right of Atom Y on the periodic table.
C) Atom X and Atom Y are in the same row on the periodic table.
D) Atoms X and Atom Y are isotopes.

Answer 1

In the given table, Atom X has 4 neutrons and a mass number of 7. Atom Y has 5 neutrons and a mass number of 9. The number of protons for Atom X is 3 and for Atom Y is 4. The atoms X and Y are in the same row on the periodic table.

Step-by-step explanation:

In the given table, Atom X has 4 neutrons and a mass number of 7. Atom Y has 5 neutrons and a mass number of 9. Since the number of neutrons is equal to the mass number minus the number of protons, we can find the number of protons for each atom by subtracting the number of neutrons from the mass number.

For Atom X, the number of protons is 7 - 4 = 3.

For Atom Y, the number of protons is 9 - 5 = 4.

The statement that is true about the two atoms based on the table is: Atom X and Atom Y are in the same row on the periodic table (Option C).