Question

what is the mass number if you have 18 protons, 22 neutrons, and 18 electrons? * 1 point
choose

what is the atomic number if you have 18 protons, 22 neutrons, and 18 electrons? * 1 point
choose

what is the element if you have 18 protons, 22 neutrons, and 18 electrons? * 1 point
choose

what is the net charge if you have 18 protons, 22 neutrons, and 18 electrons? * 1 point

Explanation:

Step1: Define mass number formula

The mass number ($A$) is the sum of protons and neutrons. $A = p + n$, where $p$ is the number of protons and $n$ is the number of neutrons.

Step2: Calculate mass number

Given $p = 18$ and $n=22$, then $A=18 + 22=40$.

Step3: Define atomic number formula

The atomic number ($Z$) is equal to the number of protons. So $Z=p$.

Step4: Determine atomic number

Since $p = 18$, the atomic number $Z = 18$.

Step5: Identify element

The element is determined by the atomic number. An element with atomic number 18 is Argon (Ar).

Step6: Calculate net - charge formula

The net charge ($q$) is given by the difference between the number of protons and electrons. $q=p - e$, where $e$ is the number of electrons.

Step7: Determine net - charge

Given $p = 18$ and $e = 18$, then $q=18-18 = 0$.

Answer:

What is the Mass Number if you have 18 protons, 22 neutrons, and 18 electrons? 40
What is the Atomic Number if you have 18 protons, 22 neutrons, and 18 electrons? 18
What is the element if you have 18 protons, 22 neutrons, and 18 electrons? Argon (Ar)
What is the net charge if you have 18 protons, 22 neutrons, and 18 electrons? 0