0
Due to its small size and similar charge/mass ratio, boron differs from other group 13 members, but it resembles closely with silicon, the second element of group 14 to exhibit diagonal relationship. Some important similarities between boron and silicon are given below,
(1) Both boron and silicon are typical non-metals, having high m.pt. b.pt nearly same densities (B=2.35gml-1 S=2.34 g//ml). low atomic volumes and bad conductor of current. However both are used as semiconductors.
(2) Both of them do not form cation and form only covalent compounds.
(3) Both exists in amorphous and crystalline state and exhibit allotropy.
(4) Both possess closer electronegativity values (B=2.0; Si=1.8).
(5) Both form numerous volatile hydrides which spontaneously catch fire on exposure to air and are easily hydrolysed.
(6) The chlorides of both are liquid, fume in most air and readily hydrolysed by water.
BCl3 + 3H2O → B(OH)3 + 3HCl
SiCl4 + H2O → Si(OH)4 + 4HCl
(7) Both form weak acids like H3BO3 and H2SiO3.
(8) Both form binary compounds with several metals to give borides and silicide. These borides and silicide react with H3PO4 to give mixture of boranes and silanes.
3Mg+2B → Mg3B2; Mg3B2 + H3PO4 → Mixture of boranes
(Magnesium boride)
2Mg + Si → Mg2Si ; Mg2Si + H3PO4 → Mixture of silanes
(magnesium silicide)
(9) The carbides of both Boron and silicon (B4C and SiC) are very hard and used as abrasive.
(10) Oxides of both are acidic and can be reduced by limited amount of Mg In excess of Mg boride and silicide are formed.
B2O3 + 3Mg → 3MgO + 2B ; SiO2 + 2Mg → 2MgO + Si
(11) Both the metals and their oxides are readily soluble in alkalies.
2B + 6NaOH → 2Na3BO3 + 3H2
(borate)
Si + 2NaOH + H2O → Na2SiO3 + 2H2
(silicate)
B2O3 + 6NaOH → 2Na3BO3 + 3H2O
SiO2 + 2NaOH → Na2SiO3 + H2O
Both borates and silicates have tetrahedral structural units and respectively. Boro silicates are known in which boron replaces silicon in the three dimensional lattice. Boron can however form planar BO3 units.
(12) Acids of both these elements form volatile esters on heating with alcohol in presence of conc. H2SO4.
B(OH)3 + 3ROH → B(OR)3 + 3H2O
Si(OH)4 + 4ROH → Si(OR)4 + 4H2O
What else can I help you with?
Slogan for boron?
dont be a moron, get boron. no you shouldt be stupid to go with this sloganbecuase your awesome
What are the Lyrics to Baga Gine?
A boron ma? Ma boron ma? Eee!A boron ma? Ma boron ma? Eee!A boron ma? Ma boron ma?E laila! Baga GineFare boron ma woto kui! Eee!Does she dance the dance?Or does she not dance the dance?Hey!.....Can you believe it! The Baga womaneven dances in the car!Hey!
What is a slogan for boron?
dont be a moron go buy some boron
Hamlet's soliloquy pondered whether or not this metalloid was diatomic?
Boron
What are minerals in bore well water?
Any mineral that is in the ground can be in well water in minute portions. Any well I put a pump into is first tested for over 24 items including - aluminum, antimony, arsenic, barium, boron, cadmium, calcium, chloride, chromium, copper, fluoride, iron, lead, magnesium, manganese, potassium, selenium, silicon, sodium, uranium, vanadium, zinc, and nitratesAny mineral that is in the ground can be in well water in minute portions. Any well I put a pump into is first tested for over 24 items including - aluminum, antimony, arsenic, barium, boron, cadmium, calcium, chloride, chromium, copper, fluoride, iron, lead, magnesium, manganese, potassium, selenium, silicon, sodium, uranium, vanadium, zinc, and nitrates
What is diagonal relation between boron and aluminium?
diagonal relationships are shown by elements in periodic table with same charge to radius ratio, i.e. same polarizing power. important examples are beryllium and magnesium, boron and aluminium, carbon and silicon. diagonal relationship leads to "mimicking" of chemical properties, i.e. beryllium will show properties of magnesium anomalous to its group behavior, for instance formation of nitrites. similarly, boron will "mimic" aluminium and show properties like formation of amphoteric oxides. also boric acid is not a protic acid as it gives H+ only in water, just like aluminium.(B(OH)3+ H2O=>B(OH)4-)
Are boron and silicon in the same group?
No, boron is in group 13, silicon is in group 14.
Where are the metaloids located at on the peroidic table?
Metalloids are located in a diagonal line between the metals and nonmetals on the periodic table. They include elements such as boron, silicon, germanium, arsenic, antimony, and tellurium. Metalloids exhibit properties of both metals and nonmetals.
Is silicon boron and antimony metals?
Silicon is a metalloid, which exhibits both metallic and non-metallic characteristics. Boron is a metalloid as well, with properties in between those of metals and non-metals. Antimony is a metal.
Can you give examples of elements that are metalloids?
The metalloids are Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, and Polonium.
What type of bond is formed when boron and silicon are combined?
When boron and silicon are combined, a covalent bond is formed. Covalent bonds result from the sharing of electrons between atoms, leading to a stable molecular structure. Boron and silicon are both nonmetals that tend to form covalent bonds due to their similar electronegativities.
What are the 7 metaloids?
The seven metalloid's are: boron, silicon, germanium, arsenic, selenium,antimony, and tellurium.http://www.bookrags.com/research/metalloids-woc/ANSWERED BY: NICK-NACK
Where are metaloids located on periodic table?
Metalloids are located on the periodic table along the staircase dividing metals to the left and non-metals to the right. They include elements such as boron, silicon, germanium, arsenic, antimony, and tellurium. Metalloids have properties intermediate between metals and non-metals.
Are boron and silicon in the same period?
No, boron is in period 2, while silicon is in period 3 on the periodic table. They are both metalloids, but they are in different periods.
What are some names of metalloids?
The six commonly recognized metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium.
What do boron silicon and arsenic have in common Use the partial Periodic Table for reference?
Boron, silicon, and arsenic are all members of Group 15 of the periodic table, also known as the nitrogen group. They are nonmetals (boron is a metalloid) with varying properties. Boron is the first element in the group, silicon is a metalloid with semiconducting properties, and arsenic is a metalloid with some similarities to a metal.
What elements are both classified as metalloids?
Elements that are classed as metalloids are Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Tellurium (Te), and Polonium (Po).
