Question

question 3 (1 point) listen three atoms have the following subatomic particles: atom 1: 5 protons, 4 neutrons, 4 electrons atom 2: 5 protons, 5 neutrons, 7 electrons atom 3: 5 protons, 7 neutrons, 5 electrons which of the following statements are true? they all have the same atomic number but different atomic masses. they are three different elements and they all have a neutral charge. they all have different atomic numbers but the same atomic mass. they are all the same element; they are isotopes of each other.

Explanation:

Step1: Identify atomic number

Atomic number = number of protons. All atoms have 5 protons, so atomic number = 5 for all.

Step2: Calculate atomic mass

Atomic mass ≈ protons + neutrons.

• Atom1: $5 + 4 = 9$
• Atom2: $5 + 5 = 10$
• Atom3: $5 + 7 = 12$

All have different atomic masses.

Step3: Check element identity

Same atomic number = same element. Isotopes are same element with different neutron counts (different masses).

Step4: Analyze charge

Charge = protons - electrons.

• Atom1: $5 - 4 = +1$ (positive)
• Atom2: $5 - 7 = -2$ (negative)
• Atom3: $5 - 5 = 0$ (neutral)

Not all neutral.

Answer:

• They all have the same atomic number but different atomic masses.
• They are all the same element; they are isotopes of each other.