Table of Contents
What are the names of alkali metals?
Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). These are (except for hydrogen) soft, shiny, low-melting, highly reactive metals, which tarnish when exposed to air.
What are the 7 alkali metals?
They are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
What is the atomic number for alkali?
Physical and chemical
| Name | Lithium | Sodium |
|---|---|---|
| Atomic number | 3 | 11 |
| Standard atomic weight (u) | 6.94(1) | 22.98976928(2) |
| Electron configuration | [He] 2s1 | [Ne] 3s1 |
| Melting point (°C) | 180.54 | 97.72 |
What are the 7 metals on the periodic table?
Group 7 element
| Hydrogen | ||
|---|---|---|
| Lithium | Beryllium | |
| Sodium | Magnesium | |
| Potassium | Calcium | Copper |
| Rubidium | Strontium | Silver |
What are alkali metals Class 10?
In the periodic table, the alkali metals are a group or column containing the chemical elements such as lithium (Li), sodium (Na), rubidium (Rb), potassium (K), francium (Fr) and Caesium (Cs). All the alkali metals react with water, with the heavier alkali metals reacting more overwhelmingly than the lighter ones.
Why are group 1 elements are called alkali metals?
The Group 1 elements are called the alkali metals. All the Group 1 elements are very reactive . They must be stored under oil to keep air and water away from them. Group 1 elements form alkaline solutions when they react with water, which is why they are called alkali metals.
What are group 2 elements called?
Alkaline Earth Metals
Group 2A — The Alkaline Earth Metals. Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
What are the 6 alkali earth metals?
alkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table. The elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
What is silver’s old name?
Our name for the element is derived from the Anglo-Saxon for silver, ‘seolfor,’ which itself comes from ancient Germanic ‘silabar. ‘ Silver’s chemical symbol, Ag, is an abbreviation of the Latin word for silver, ‘argentum.
Is Group 7 and 17 the same?
Group 7 (IUPAC group 17) is a vertical column on the right of the periodic table . The elements in group 7 are non-metals called the halogens .
What are alkali metals class11?
The alkali metals are Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs) and Francium (Fr). The alkali metals react vigorously with water forming soluble hydroxides which are called alkalis. This is the reason why these metals are called alkali metals.