What are the 20 element and their uses?
| 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 |
Why are the first 20 elements important?
It’s handy to know the first 20 elements of the periodic table. Around 99% of the mass of the human body is made of six of these elements. The first 20 elements are also a good overview of the different element groups. They also occur in more everyday chemical reactions.
What are the uses of elements in the periodic table?
Scientists use the periodic table to quickly refer to information about an element, like atomic mass and chemical symbol. The periodic table’s arrangement also allows scientists to discern trends in element properties, including electronegativity, ionization energy, and atomic radius.
What are 3 uses for astatine?
There are currently no uses for astatine outside of research. The half-life of the most stable isotope is only 8 hours, and only tiny amounts have ever been produced. A mass spectrometer has been used to confirm that astatine behaves chemically like other halogens, particularly iodine.
What are the 1st 20 elements?
Lithium, Beryllium, Sodium, Magnesium, Aluminium, Potassium, and Calcium are metals in the first twenty elements. Hydrogen, Helium, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Phosphorous, Sulphur, Chlorine, and Argon are the non-metals in the first twenty elements.
What are the twenty 20 element?
What are the First 20 Elements of the Periodic Table?
| Atomic Number | Element | Symbol |
|---|---|---|
| 17 | Chlorine | Cl |
| 18 | Argon | Ar |
| 19 | Potassium | K |
| 20 | Calcium | Ca |
What are the 20 first elements?
What is the 20 elements?
The elements of the periodic table sorted by atomic number
| Atomic number | Name chemical element | Symbol |
|---|---|---|
| 18 | Argon | Ar |
| 19 | Potassium | K |
| 20 | Calcium | Ca |
| 21 | Scandium | Sc |
What are the 20 most common elements?
Most common 20 elements are: H, He, C, N, O, Na, Al, Si, S, Cl, K, Ca, Fe, Ni, Cu, Zn, Ag, Sn, Hg, Au.
What element is the most useful?
Silicon is one of the most useful elements to mankind. Most is used to make alloys including aluminium-silicon and ferro-silicon (iron-silicon).
What are uses of Krypton?
Krypton is used commercially as a filling gas for energy-saving fluorescent lights. It is also used in some flash lamps used for high-speed photography. Unlike the lighter gases in its group, it is reactive enough to form some chemical compounds. For example, krypton will react with fluorine to form krypton fluoride.
What are uses of neon?
Neon is used in vacuum tubes, high-voltage indicators, lightning arresters, wavemeter tubes, television tubes, and helium–neon lasers. Liquefied neon is commercially used as a cryogenic refrigerant in applications not requiring the lower temperature range attainable with more extreme liquid-helium refrigeration.
How can I learn more about the first 20 elements?
To learn more about the first 20 elements and to access more data pages on the chemical elements, such as a list of all 118 elements with their symbols and atomic numbers, register with BYJU’S and download the mobile application on your smartphone. Put your understanding of this concept to test by answering a few MCQs.
What are the first 20 elements in the periodic table?
The very first twenty elements in the periodic table are: 1 Hydrogen (H) 2 Helium (He) 3 Lithium (Li) 4 Beryllium (Be) 5 Boron (B) 6 Carbon (C) 7 Nitrogen (N) 8 Oxygen (O) 9 Flourine (F) 10 Neon (Ne)
What do the elements in the periodic table represent?
Each element header has its name, atomic number, atomic symbol, as well as a color code to indicate the group it belongs to. As an example, Hydrogen is green, so it belongs to the group, “other nonmetals.”