0
Hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, argon, potassium, and calcium.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What are the first 20 elements in the periodic table?
HydrogenHeliumLithiumBerylliumBoronCarbonNitrogenOxygenFluorineNeonSodiumMagnesiumAluminumSiliconPhosphorousSulphurChlorineArgonPotassiumCalciumHope this helped :)
When Mendeleev developed the first periodic table there were approximately how many elements known?
By 1869, a total of 63 elements had been discovered.
Why did Dalton only list 20 elements in his table?
Because he was unaware that any others existed
State which two elements from the first 20 elements of the modern periodic table are not arranged in order of increasing atomic mass?
Took me a while to find but you can spot it eventually. It's Argon (Ar) and Potassium (K). Hope this helps :)
What are the first 20 elements at room temperature?
H
What are the first 20 elements in the periodic table?
HydrogenHeliumLithiumBerylliumBoronCarbonNitrogenOxygenFluorineNeonSodiumMagnesiumAluminumSiliconPhosphorousSulphurChlorineArgonPotassiumCalciumHope this helped :)
What are the 1st 20 elements of the periodic table made of?
The first twenty elements are made up f different things
What are the first 20 elements of the periodic table along with their mass number?
see related link
When Mendeleev developed the first periodic table there were approximately how many elements known?
By 1869, a total of 63 elements had been discovered.
What are the uses of the first 20 elements of the periodic table?
The answer is too long for Wiki Answers; please read a book of general chemistry.
What are the elements that are conductor from the first 20 elements of the periodic table?
Conductors in the first twenty elements include; Lithium - Li Beryllium - Be Carbon - C Sodium - Na Magnesium - Mg Silicon - Si Potassium - K Calcium - Ca
Which metal in the first 20 elements is most reactive?
The First 20 Elements in the Periodic Table are;1. Hydrogen2. Helium3. Lithium4. Beryllium5. Boron6. Carbon7. Nitrogen8. Oxygen9. Fluorine10. Neon11. Sodium12. Magnesium13. Aluminium14. Silicon15. Phosphorus16. Sulphur17. Chlorine18. Argon19. Potassium20. Calcium
What element of the first eighteen elements has the highest melting point?
Carbon (C) has the highest melting point out of all the elements, and so, as it's in the first 20 elements, it has the highest melting point of the first 20 elements too. Its melting point is 3823K.
Is calcium an elemnt?
Yes, it has the atomic # of 20 on the periodic table of elements.
What month was the periodic table created in?
August 20, 1864 was when John Alexander Reina Newlands produced the first periodic table of the elements.
How many elements are arranged on the periodic table?
There are currently 118 elements in the periodic table, with 20 man-made and 88 (not 92) naturally-occurring elements. *Since 23rd October 2008.
Are 3-12 elements on the periodic table of elements representative elements?
Yes. All elements from 1-20 are representative elements as they belong to a representative group (i.e. they aren't a transition metal).
