Statements (49)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
group of chemical elements
|
| gptkbp:appearance |
silvery
|
| gptkbp:atomicRadius |
increases down the group
|
| gptkbp:canExtract |
electrolysis of molten salts
|
| gptkbp:characteristic |
highly reactive
form strong bases with water low melting points soft metals low densities |
| gptkbp:containsElement |
gptkb:Francium
gptkb:Cesium gptkb:Lithium gptkb:Rubidium Potassium Sodium |
| gptkbp:density |
less than water (except potassium, rubidium, cesium, francium)
|
| gptkbp:discoveredBy |
gptkb:Humphry_Davy
|
| gptkbp:discoveredIn |
19th century
|
| gptkbp:doNotOccur |
free in nature
|
| gptkbp:electronegativity |
low
|
| gptkbp:excludes |
gptkb:Hydrogen
|
| gptkbp:flameTestColor |
characteristic colors
|
| gptkbp:form |
salts
ionic compounds colorless ions in solution |
| gptkbp:foundIn |
s-block of periodic table
|
| https://www.w3.org/2000/01/rdf-schema#label |
Alkali metals
|
| gptkbp:ionizationEnergy |
low
|
| gptkbp:nameOrigin |
alkali, Arabic for 'ashes'
|
| gptkbp:oxidationStates |
+1
|
| gptkbp:periodicTableGroup |
Group 1
|
| gptkbp:reactionWithWater |
form hydroxides
produce hydrogen gas |
| gptkbp:relatedGroup |
1
|
| gptkbp:solubility |
compounds are generally soluble in water
|
| gptkbp:storage |
stored under oil
|
| gptkbp:symbol |
gptkb:Li
K Cs Fr Na Rb |
| gptkbp:type |
increase down the group
|
| gptkbp:usedIn |
batteries
photoelectric cells heat transfer agents |
| gptkbp:valenceElectrons |
1
|
| gptkbp:bfsParent |
gptkb:Alkali_feldspar
|
| gptkbp:bfsLayer |
7
|