Editing Boron group (section)

====Hydrides====
Most of the elements in the boron group show increasing [[reactivity (chemistry)|reactivity]] as the elements get heavier in atomic mass and higher in atomic number. [[Boron]], the first element in the group, is generally unreactive with many elements except at high temperatures, although it is capable of forming many compounds with [[hydrogen]], sometimes called ''[[boranes]]''.<ref>{{cite book |title=Concepts And Problems In Inorganic Chemistry  |author=Raghavan, P. S.  |year=1998 |publisher=Discovery Publishing House |location=New Delhi, India|isbn=81-7141-418-4 |page=43 |url=https://books.google.com/books?id=pBiS0jc-kWIC&pg=PA43}}</ref> The simplest borane is [[diborane]], or B<sub>2</sub>H<sub>6</sub>.<ref name="Harding, A. Johnson, Janes 2002 113"/> Another example is B<sub>10</sub>H<sub>14</sub>.

The next group-13 elements, [[aluminium]] and [[gallium]], form fewer stable hydrides, although both AlH<sub>3</sub> and GaH<sub>3</sub> exist. Indium, the next element in the group, is not known to form many hydrides, except in complex compounds such as the [[phosphine]] complex {{chem2|H3InP(Cy)3}} (Cy=[[cyclohexyl]]).<ref>{{Cite journal | last1 = Cole | first1 = M. L. | last2 = Hibbs | first2 = D. E. | last3 = Jones | first3 = C. | last4 = Smithies | first4 = N. A. | title = Phosphine and phosphido indium hydride complexes and their use in inorganic synthesis | doi = 10.1039/A908418E | journal = Journal of the Chemical Society, Dalton Transactions | issue = 4 | pages = 545–550 | year = 2000 }}</ref> No stable compound of thallium and hydrogen has been synthesized in any laboratory.

{| class="wikitable collapsible collapsed"
 ! colspan="6"| Some common chemical compounds of the boron group<ref name="Harding, A. Johnson, Janes 2002 113"/>
<ref name="grp.13 elem. chem.">[[#Downs1993|Downs]], pp. 197–201</ref><ref>{{cite book |title= Oxford dictionary of chemistry |last= Daintith|first= John|year= 2004|publisher= Market House Books|url= https://books.google.com/books?id=jzT-zlKESmsC&pg=PA269|isbn= 978-0-19-860918-6}}</ref><ref name="In2">{{cite book| script-title=ru:Химия индия|author1=Bleshinsky, S. V. |author2=Abramova, V. F. |publisher = Frunze|page=301|year =1958|language=ru}}</ref><ref>[[#Downs1993|Downs]], pp. 195–196</ref><ref>[[#Henderson|Henderson]], p. 6</ref>
|-
! Element!!Oxides!!Hydrides!!Fluorides!!Chlorides!!Sulfides
|- valign="top"
| rowspan=9 | [[Boron]]
|(β/g/α)B<sub>2</sub>O<sub>3</sub> || B<sub>2</sub>H<sub>6</sub> || BF<sub>3</sub> || BCl<sub>3</sub> || B<sub>2</sub>S<sub>3</sub>
|-
|B<sub>2</sub>O || B<sub>10</sub>H<sub>14</sub> || {{chem|BF|4|-}} ||  ||
|-
|B<sub>6</sub>O || BH<sub>3</sub> || B<sub>2</sub>F<sub>4</sub> ||  ||
|-
| || B<sub>5</sub>H<sub>9</sub> || BF ||  ||
|-
| || B<sub>6</sub>H<sub>12</sub> ||  ||  ||
|-
| || B<sub>4</sub>H<sub>10</sub> ||  ||  ||
|-
| || B{{su|b=6}}{{chem|H|6|2-}} ||  ||  ||
|-
| ||  B{{su|b=12}}{{chem|H|12|2-}} ||  ||  ||
|-
| || B<sub>20</sub>H<sub>26</sub> ||  ||  ||
|- valign="top"
| rowspan=4 | [[Aluminium]]
| (γ/δ/η/θ/χ)Al<sub>2</sub>O<sub>3</sub>|| (α/α`/β/δ/ε/θ/γ) AlH<sub>3</sub> || AlF<sub>3</sub> || AlCl<sub>3</sub> || (α/β/γ) Al<sub>2</sub>S<sub>3</sub>
|-
|Al<sub>2</sub>O || Al<sub>2</sub>H<sub>6</sub> ||  ||  ||
|-
|AlO || AlH<sub>4</sub> ||  ||  ||
|-
| || {{chem|AlH|4|-}} ||  ||  ||
|- valign="top"
| rowspan=6 | [[Gallium]]
|(α/β/δ/γ/ε) Ga<sub>2</sub>O<sub>3</sub> || Ga<sub>2</sub>H<sub>6</sub> || GaF<sub>3</sub> || GaCl<sub>3</sub> || GaS
|-
| || GaH<sub>4</sub> ||  || GaCl<sub>2</sub> ||
|-
| || GaH<sub>3</sub> ||  || Ga<sub>2</sub>Cl<sub>4</sub> ||
|-
| ||  ||  || Ga<sub>2</sub>Cl<sub>6</sub> ||
|-
| ||  ||  || {{chem|GaCl|4|-}} ||
|-
| ||  ||  || Ga{{su|b=2}}{{chem|Cl|7|-}} ||
|- valign="top"
| rowspan=2 | [[Indium]]
| In<sub>2</sub>O<sub>3</sub> || InH<sub>3</sub> || InF<sub>3</sub> || InCl<sub>3</sub> || (α/β/γ) In<sub>2</sub>S<sub>3</sub>
|-
| In<sub>2</sub>O ||  ||  ||  ||
|- valign="top"
| rowspan=4 | [[Thallium]]
| Tl<sub>2</sub>O<sub>3</sub> || TlH<sub>3</sub> || TlF || TlCl ||
|-
| Tl<sub>2</sub>O || TlH || TlF<sub>3</sub> || TlCl<sub>3</sub> ||
|-
| TlO<sub>2</sub> ||  || {{chem|TlF|4|3-}} || TlCl<sub>2</sub> ||
|-
| Tl<sub>4</sub>O<sub>3</sub> ||  || {{chem|TlF|3|2-}} || Tl<sub>2</sub>Cl<sub>3</sub> ||
|- valign="top"
| rowspan=2 | [[Nihonium]]
| (Nh<sub>2</sub>O){{efn|To this date, no nihonium compounds have been synthesized (except possibly NhOH), and all other proposed compounds are entirely theoretical.}}
 ||(NhH)  || (NhF) || (NhCl) || NhOH
|-
| (Nh<sub>2</sub>O<sub>3</sub>) ||(NhH<sub>3</sub>)  ||(NhF<sub>3</sub>)  ||(NhCl<sub>3</sub>)  ||
|-
| || || ||({{chem|NhF|6|-}}) || ||
|}