How many electrons, protons, and neutrons are there in the ion
103
45
X3+?

Question

How many electrons, protons, and neutrons are there in the ion   
103
45
X3+?

BlackTom AI · Accepted Answer

We’re given an ion with mass number 103, atomic number 45, and a 3+ charge.
First, recall key relationships: protons = atomic number (Z), electrons = protons minus the charge (for a positive ion), and neutrons = mass number minus protons.
Option 1: '45 electrons, 45 protons, and 58 neutrons' — This would imply no net charge (electrons equal to protons). Since the ion carries a 3+ charge, this option cannot be correct because it has the same number of electrons as protons, not accounting for the missing electrons due to the positive charge.
Option 2: '45 electrons, 42 protons, and 58 neutrons' — Here, the number of protons is 42, but the atomic number is given as 45, so this option misidentifies the identity of the element. The proton count must match the atomic number 45 regardless of ionization state.
Option 3: '42 electrons, 45 protons, and 58 neutrons' — This aligns with Z = 45 protons, and the 3+ charge means electrons = 45 − 3 = 42. Neutrons = mass number − protons = 103 − 45 = 58. All three counts are internally consistent with the given data.
Option 4: '48 electrons, 45 protons, and 58 neutrons' — Having 48 electrons would imply a negative charge (more electrons than protons), which contradicts the stated 3+ charge. So this is incorrect.
Option 5: '45 electrons, 45 protons, and 45 neutrons' — This option incorrects both the electron count (it would be neutral) and the neutron count (mass number would be 90, not 103). It fails to satisfy both charge and mass constraints.
In summary, each choice either violates the charge, the atomic number, or the mass relationship (mass number = protons + neutrons). The only option that satisfies all provided quantities is the one with 42 electrons, 45 protons, and 58 neutrons, which corresponds to the ion X with Z = 45, A = 103, and charge +3.

How many electrons, protons, and neutrons are there in the ion 103 45 X3+?

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