The atomic number of krypton is 36. If the mass number of a krypton atom is 84, which table shows the number of subatomic particles inside and outside the nucleus of the krypton atom?

Question

Think: What particles are found in the nucleus and which ones are found outside the nucleus.

Answer 1

To determine the number of subatomic particles in a krypton atom with atomic number 36 and mass number 84, we can break down the information about its subatomic particles:

1. Atomic Number (Z): The atomic number of krypton is 36, which means it has 36 protons. Since atoms are electrically neutral, the number of electrons will also be 36.

2. Mass Number (A): The mass number is the total number of protons and neutrons in the nucleus. For krypton, the mass number is 84.

   To find the number of neutrons (N), we can use the formula: \[ \text{Mass Number} = \text{Number of Protons} + \text{Number of Neutrons} \] \[ 84 = 36 + N \] \[ N = 84 - 36 = 48 \text{ neutrons} \]

Now we can summarize the number of subatomic particles:

• Protons: 36 (inside the nucleus)
• Neutrons: 48 (inside the nucleus)
• Electrons: 36 (outside the nucleus)

Combining this information, we can create a table that shows the number of subatomic particles inside and outside the nucleus of the krypton atom:

| Particle Type | Number | Location | |-------------------|------------|-----------------------| | Protons | 36 | Inside the nucleus | | Neutrons | 48 | Inside the nucleus | | Electrons | 36 | Outside the nucleus |

This table provides a clear overview of the subatomic structure of the krypton atom.