The mass of electron, proton and neutron in grams are:

• • $1.108 \times {10^{ - 28}}$, $1.6726 \times {10^{ - 24}}$, $1.675 \times {10^{ - 24}}$
• • $9.108 \times {10^{28}}$, $1.6726 \times {10^{24}}$, $1.675 \times {10^{24}}$
• • $9.108 \times {10^{ - 24}}$, $1.6726 \times {10^{ - 24}}$, $1.675 \times {10^{24}}$
• • $9.108 \times {10^{ - 28}}$, $1.6726 \times {10^{ - 24}}$, $1.675 \times {10^{ - 24}}$

To determine the correct masses of the electron, proton, and neutron from the options provided, we need to recall the known values of these subatomic particles. The masses are typically expressed in grams and are very small, often represented in scientific notation. Let's break down the masses of each particle:

Masses of Subatomic Particles

• Electron: Approximately \(9.109 \times 10^{-28}\) grams
• Proton: Approximately \(1.6726 \times 10^{-24}\) grams
• Neutron: Approximately \(1.675 \times 10^{-24}\) grams

Analyzing the Options

Now, let's evaluate the options you provided:

• Option 1: \(1.108 \times 10^{-28}\), \(1.6726 \times 10^{-24}\), \(1.675 \times 10^{-24}\)
• Option 2: \(9.108 \times 10^{28}\), \(1.6726 \times 10^{24}\), \(1.675 \times 10^{24}\)
• Option 3: \(9.108 \times 10^{-24}\), \(1.6726 \times 10^{-24}\), \(1.675 \times 10^{24}\)
• Option 4: \(9.108 \times 10^{-28}\), \(1.6726 \times 10^{-24}\), \(1.675 \times 10^{-24}\)

Identifying the Correct Answer

From our earlier recall of the masses:

• The mass of the electron is \(9.109 \times 10^{-28}\) grams, which matches the first part of Option 4.
• The mass of the proton is \(1.6726 \times 10^{-24}\) grams, which also matches Option 4.
• The mass of the neutron is \(1.675 \times 10^{-24}\) grams, again matching Option 4.

Therefore, the correct answer is Option 4: \(9.108 \times 10^{-28}\), \(1.6726 \times 10^{-24}\), \(1.675 \times 10^{-24}\).

Why the Other Options are Incorrect

Let’s clarify why the other options do not work:

• Option 1 has an incorrect mass for the electron, as \(1.108 \times 10^{-28}\) is not the accepted value.
• Option 2 presents values with positive exponents, which are far too large for subatomic particles.
• Option 3 has the electron mass incorrectly listed as \(9.108 \times 10^{-24}\), which is also incorrect.

In summary, understanding the masses of these particles is crucial for various fields in physics and chemistry, especially in atomic theory and quantum mechanics. The correct identification of these values helps in calculations involving atomic structure and behavior.