How can I remember the 20 elements of the periodic table?
How can I remember the 20 elements of the periodic table?
Mnemonic Device: Happy Henry Lives Beside Boron Cottage, Near Our Friend Nelly Nancy MgAllen. Silly Patrick Stays Close.
What are the first 20 elements in order?
These are the first 20 elements, listed in order:
- H – Hydrogen.
- He – Helium.
- Li – Lithium.
- Be – Beryllium.
- B – Boron.
- C – Carbon.
- N – Nitrogen.
- O – Oxygen.
What is the first 20 element?
First 20 Elements
| Atomic Number | Element | Symbol |
|---|---|---|
| 17 | Chlorine | Cl |
| 18 | Argon | Ar |
| 19 | Potassium | K |
| 20 | Calcium | Ca |
What are the first 20 element in periodic table?
How do you remember the elements and symbols?
Calcium – Ca “Caws give milk!” Pronounced with an accent to make cows sound like it’s spelled with an A. Chlorine – Cl “You Clean with chlorine!” Fluorine – F You need to Floss after using fluorine! Iron – Fe “Fe, Fi, Fo, Fum, I’m an iron man!” Helium – He If you breathe in helium, you will laugh!
What are the first 20 elements and their symbols?
In order of increasing atomic number, the first 20 elements and their symbols are:
- Hydrogen (H)
- Helium (He)
- Lithium (Li)
- Beryllium (Be)
- Boron (B)
- Carbon (C)
- Nitrogen (N)
- Oxygen (O)
What are the uses of first 20 elements?
| ELEMENT | USES | |
|---|---|---|
| 20) | Potassium | Found in fertilizers |
| 21) | Silicon | Used in electronics & in compounds for making glass |
| 22) | Silver | Used in tableware, jewelry, photography, medicines, & coins |
| 23) | Sodium | Soft metal that combines with chlorine to make table salt |
What is the electron configuration of the first 20 elements?
List of Electron Configurations of Elements
| NUMBER | ELEMENT | ELECTRON CONFIGURATION |
|---|---|---|
| 18 | Argon | [Ne]3s23p6 |
| 19 | Potassium | [Ar]4s1 |
| 20 | Calcium | [Ar]4s2 |
| 21 | Scandium | [Ar]3d14s2 |
What are the first 20 elements and symbols?