MiJell Doyle - Protons Neutrons and Electrons Practice Worksheet ... - Free Printable

Okay, I see the image is a "Protons, Neutrons, and Electrons Practice Worksheet". The task is to fill in the table with the correct number of protons, neutrons, and electrons for each element based on its atomic number and mass number.

To solve this, I need to understand the relationship between these three values:
- Atomic Number (Z): This is the number of protons in the nucleus of an atom. It defines the element.
- Mass Number (A): This is the total number of protons and neutrons in the nucleus (A = Protons + Neutrons).
- Electrons: In a neutral atom, the number of electrons equals the number of protons.

Therefore, the formulas are:
- Protons = Atomic Number
- Neutrons = Mass Number - Atomic Number
- Electrons = Protons (for a neutral atom)

I will now go through the table row by row and calculate the missing values using these formulas.

Let's start with the first row.

Row 1:
- Element: Hydrogen (H)
- Atomic Number: 1
- Mass Number: 1
- Protons = Atomic Number = 1
- Neutrons = Mass Number - Atomic Number = 1 - 1 = 0
- Electrons = Protons = 1

Row 2:
- Element: Helium (He)
- Atomic Number: 2
- Mass Number: 4
- Protons = 2
- Neutrons = 4 - 2 = 2
- Electrons = 2

Row 3:
- Element: Lithium (Li)
- Atomic Number: 3
- Mass Number: 7
- Protons = 3
- Neutrons = 7 - 3 = 4
- Electrons = 3

Row 4:
- Element: Beryllium (Be)
- Atomic Number: 4
- Mass Number: 9
- Protons = 4
- Neutrons = 9 - 4 = 5
- Electrons = 4

Row 5:
- Element: Boron (B)
- Atomic Number: 5
- Mass Number: 11
- Protons = 5
- Neutrons = 11 - 5 = 6
- Electrons = 5

Row 6:
- Element: Carbon (C)
- Atomic Number: 6
- Mass Number: 12
- Protons = 6
- Neutrons = 12 - 6 = 6
- Electrons = 6

Row 7:
- Element: Nitrogen (N)
- Atomic Number: 7
- Mass Number: 14
- Protons = 7
- Neutrons = 14 - 7 = 7
- Electrons = 7

Row 8:
- Element: Oxygen (O)
- Atomic Number: 8
- Mass Number: 16
- Protons = 8
- Neutrons = 16 - 8 = 8
- Electrons = 8

Row 9:
- Element: Fluorine (F)
- Atomic Number: 9
- Mass Number: 19
- Protons = 9
- Neutrons = 19 - 9 = 10
- Electrons = 9

Row 10:
- Element: Neon (Ne)
- Atomic Number: 10
- Mass Number: 20
- Protons = 10
- Neutrons = 20 - 10 = 10
- Electrons = 10

Row 11:
- Element: Sodium (Na)
- Atomic Number: 11
- Mass Number: 23
- Protons = 11
- Neutrons = 23 - 11 = 12
- Electrons = 11

Row 12:
- Element: Magnesium (Mg)
- Atomic Number: 12
- Mass Number: 24
- Protons = 12
- Neutrons = 24 - 12 = 12
- Electrons = 12

Row 13:
- Element: Aluminum (Al)
- Atomic Number: 13
- Mass Number: 27
- Protons = 13
- Neutrons = 27 - 13 = 14
- Electrons = 13

Row 14:
- Element: Silicon (Si)
- Atomic Number: 14
- Mass Number: 28
- Protons = 14
- Neutrons = 28 - 14 = 14
- Electrons = 14

Row 15:
- Element: Phosphorus (P)
- Atomic Number: 15
- Mass Number: 31
- Protons = 15
- Neutrons = 31 - 15 = 16
- Electrons = 15

Row 16:
- Element: Sulfur (S)
- Atomic Number: 16
- Mass Number: 32
- Protons = 16
- Neutrons = 32 - 16 = 16
- Electrons = 16

Row 17:
- Element: Chlorine (Cl)
- Atomic Number: 17
- Mass Number: 35
- Protons = 17
- Neutrons = 35 - 17 = 18
- Electrons = 17

Row 18:
- Element: Argon (Ar)
- Atomic Number: 18
- Mass Number: 40
- Protons = 18
- Neutrons = 40 - 18 = 22
- Electrons = 18

Row 19:
- Element: Potassium (K)
- Atomic Number: 19
- Mass Number: 39
- Protons = 19
- Neutrons = 39 - 19 = 20
- Electrons = 19

Row 20:
- Element: Calcium (Ca)
- Atomic Number: 20
- Mass Number: 40
- Protons = 20
- Neutrons = 40 - 20 = 20
- Electrons = 20

I have now calculated all the missing values for the worksheet. I will present the completed table as the final answer.