What is the 9 element on the periodic table?
Fluorine
The Elements, sorted by Atomic Number
| Atomic Number | Symbol | Name |
|---|---|---|
| 9 | F | Fluorine |
| 10 | Ne | Neon |
| 11 | Na | Sodium |
| 12 | Mg | Magnesium |
What are the first 12 elements of the periodic table?
Terms in this set (12)
- Hydrogen. Atomic number: 1. Symbol: H.
- Helium. Atomic number: 2. Symbol: He.
- Lithium. Atomic number: 3. Symbol: Li.
- Beryllium. Atomic number: 4. Symbol: Be.
- Boron. Atomic number: 5. Symbol: B.
- Carbon. Atomic number: 6. Symbol: C.
- Nitrogen. Atomic number: 7. Symbol: N.
- Oxygen. Atomic number: 8. Symbol: O.
How was fluorine found?
Fluorine was discovered in 1886 by French chemist Henri Moissan (1852-1907). Moissan collected the gas by passing an electric current through one of its compounds, hydrogen fluoride (H 2 F 2 ). Fluorides are effective in preventing tooth decay and are added to urban water supplies as well.
Why is Cobalt Group 9?
Cobalt is a metallic element that can be used to turn glass a deep blue color. Rhodium can be used in jewelry as a shiny metal. Iridium is mainly used as a hardening agent for platinum alloys….Chemistry.
| Z | 27 |
|---|---|
| Element | cobalt |
| No. of electrons per shell | 2, 8, 15, 2 |
| M.P. | 1768 K 1495 °C |
| Discoverer | Georg Brandt |
What is the first 10 elements in the periodic table?
What are the First 10 Elements
| Name of the Element | Symbol of the Element | Atomic Number |
|---|---|---|
| Nitrogen | N | 7 |
| Oxygen | O | 8 |
| Fluorine | F | 9 |
| Neon | Ne | 10 |
Why was fluorine named?
The name fluorine is derived from the mineral fluorite which comes from the Latin word “fluere” meaning “to flow.” The name was suggested by English chemist Sir Humphry Davy.
What is the Valency of Group 9 elements?
Valency of First 30 Elements
| Element | Atomic Number | Valency |
|---|---|---|
| Valency of Carbon | 6 | 4 |
| Valency of Nitrogen | 7 | 3 |
| Valency of Oxygen | 8 | 2 |
| Valency of Fluorine | 9 | 1 |
Who found cobalt?
Georg Brandt
Cobalt/Discoverers
Cobalt is the first metal with a recorded discoverer. Swedish chemist Georg Brandt (1694-1768) first isolated it in 1735.
What are the first 10 elements on the periodic table?
First 10 elements and their symbols: Hydrogen (H) Helium (He) Lithium (Li) Beryllium (Be) Boron (B) Carbon (C) Nitrogen (N)
How are the periods on the periodic table related?
In this table there are periods of increasing length between the noble gases; the table thus contains a period of 2 elements, two of 8 elements, two of 18 elements, one of 32 elements, and an incomplete period. The elements in each period may be connected by tie lines with one or more elements in the following period.
Who was the creator of the periodic table?
Seeing chemical elements arranged in the modern periodic table is as familiar as seeing a map of the world, but it was not always so obvious. The creator of the periodic table, Dmitri Mendeleev, in 1869 began collecting and sorting known properties of elements, like he was playing a game, while traveling by train.
Can a periodic table game be used to grade chemistry?
The periodic table game available on this page is for entertainment purposes only, and should not be used to grade students on their knowledge of chemical elements. When shown an element name, find the corresponding element atomic number and symbol in the periodic table as quickly as you can!