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How to find the number of protons, neutrons, & electrons for an element on the periodic table.

The Periodic Table. How to find the number of protons, neutrons, & electrons for an element on the periodic table. The periodic table is made up of elements. What is an element?.

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How to find the number of protons, neutrons, & electrons for an element on the periodic table.

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  1. The Periodic Table How to find the number of protons, neutrons, & electrons for an element on the periodic table.

  2. The periodic table is made up of elements. What is an element? An element is a substance that cannot be broken down into simpler substances by ordinary physical or chemical means. Elements are known as the building blocks of matter. It is made up of protons, neutrons, and electrons.

  3. Protons have a positivecharge, are located in the nucleus, and have a mass of 1 amu. Remember P + Proton Positive + +

  4. Neutrons have a Neutralcharge, are also located in the nucleus, and have a mass of 1 amu Remember N Isn’t this easy! Neutron Neutral

  5. Electrons have a Negativecharge, are located on the shells around the nucleus, and have a mass of 0 amu. Remember E- Nucleus Electron Negative Electrons Shells

  6. The four parts of the periodic table are: 1 Atomic Number H Symbol Element Hydrogen 1.00794 Atomic Mass (Weight)

  7. Quick Quiz What is the Atomic Number for Carbon (C)? What is the Atomic Number for Iron (Fe)? What is the Atomic Number for Potassium (K)? What is the Atomic Number for Nitrogen (N)? What is the Atomic Number for Gold (Au)? Keep Going!

  8. Quick Quiz 6 What is the Atomic Number for Carbon (C)? 26 What is the Atomic Number for Iron (Fe)? 19 What is the Atomic Number for Potassium (K)? 7 What is the Atomic Number for Nitrogen (N)? 79 What is the Atomic Number for Gold (Au)? Keep Going!

  9. Atomic Number 1 The Atomic Number equals the number of protons and electrons for that element. H Hydrogen has 1 proton 1 electron. Hydrogen 1.00794

  10. Atomic Number 6 The Atomic Number equals the number of protons and electrons for that element. C Carbon has Carbon 6 Protons 6 Electrons 12.011

  11. Quick Quiz How many protons does Oxygen have? How many electrons does Oxygen have? How many protons does Calcium have? How many electrons does Calcium have? How many protons does Zinc have? How many electrons does Zinc have? How many protons does Tin (Sn) have? How many electronsdoes Tin (Sn) have? How many protons does Radon have? How many electronsdoes Radon have?

  12. Quick Quiz 8 How many protons does Oxygen have? How many electrons does Oxygen have? How many protons does Calcium have? 20 How many electrons does Calcium have? How many protons does Zinc have? 30 How many protons does Zinc have? How many protons does Tin (Sn) have? 50 How many protons does Tin (Sn) have? How many protons does Radon have? 86 How many protons does Radon have?

  13. We’ve learned about protons and electrons. What are we missing? Neutrons

  14. Atomic Number 1 The number of Neutrons equals the Atomic Mass minus the Atomic Number. H Atomic Mass Hydrogen - Atomic Number 1.00794 Number of Neutrons Atomic Mass

  15. This sounds very complicated and I’m confused. That’s O.K. follow these 2 simple steps to help you. ? Atomic Mass - Atomic Number Number of Neutrons

  16. Step 1 Round the Atomic Mass to the nearest whole number. 1 1.00794 H Look at the tenths column. If the number in the tenths column is 5 or greater, then round the number up, if not leave unchanged. Hydrogen 1.00794 1.00794 rounded to the nearest whole number is? Atomic Mass 1

  17. Step 2 1 Find the Atomic Number: 1 Take the rounded Atomic Mass H 1 Subtract the Atomic Number 1 - Hydrogen Equals the Number of Neutrons 0 1.00794

  18. Practice Find the number of Neutrons in Nitrogen: 7 N Take the rounded Atomic Mass 14 Subtract the Atomic Number 7 - Nitrogen Equals the Number of Neutrons 7 14.0067

  19. Practice 2 Find the number of Neutrons in Chlorine: 17 Cl Take the rounded Atomic Mass Subtract the Atomic Number - Chlorine Equals the Number of Neutrons 35.453 Very Good!

  20. Practice 2 Find the number of Neutrons in Chlorine: 17 Cl Take the rounded Atomic Mass 35 Subtract the Atomic Number 17 - Chlorine Equals the Number of Neutrons 18 35.453 Very Good!

  21. Practice 3 Find the number of Neutrons in Gold: 79 Au Take the rounded Atomic Mass Subtract the Atomic Number - Gold Equals the Number of Neutrons 196.9665 Very Good!

  22. Practice 3 Find the number of Neutrons in Gold: 79 Au Take the rounded Atomic Mass 197 Subtract the Atomic Number 79 - Gold Equals the Number of Neutrons 118 196.9665 Very Good!

  23. Practice on Your Own Directions: Find the number of Protons, Electrons, and Neutrons for each element listed below. Boron (B) Protons - Electrons - Neutrons - Sulfur (S) Protons - Electrons - Neutrons - Scandium (Sc) Protons - Electrons - Neutrons - Copper (CU) Protons - Electrons - Neutrons - Indium (In) Protons - Electrons - Neutrons - Plutonium (Pu) Protons - Electrons - Neutrons -

  24. Practice on Your Own Directions: Find the number of Protons, Electrons, and Neutrons for each element listed below. Boron (B) Protons - Electrons - Neutrons - Sulfur (S) Protons - Electrons - Neutrons - Scandium (Sc) Protons - Electrons - Neutrons - 16 21 5 6 16 24 Copper (CU) Protons - Electrons - Neutrons - Indium (In) Protons - Electrons - Neutrons - Plutonium (Pu) Protons - Electrons - Neutrons - 29 49 94 35 66 150

  25. Now you know a little about the periodic table and how to find the number of protons, electrons, and neutrons.

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