Aluminum ,thallium, Chemistry

Assignment Help:

 

GROUP 13: ALUMINUM TO THALLIUM

The substance aluminum, indium, gallium and thallium have valence electron configurations (ns)2(np)1 and for the lighter elements their chemistry is dominated by the +3 oxidation state. The group trends are very different from those in groups 2 and 1. The Al3+ ion has a large radius ratio and is rigidly polarizing, so that significant deviations from simple ionic behavior are usually observed. The filling of the d shells (and 4f in period 6) goes to decreased electropositive character for Tl and Ga, In similar to that shown in group 12. There is also a progressive stabilization of lower oxidation states in lower side of the group.

Aluminum is common metallic element in the Earth's crust, being a constituent of almost all silicate minerals. Weathering leaves deposits of the very insoluble aluminum minerals Al(OH)3 and AlO(OH), known together as bauxite, which forms the principal source of the element. The metal is produce by electrolysis of fused cryolite Na3[AlF6]. Although reactive when clean, the metal easily builds a very resistant oxide film, which performs widespread applications as a lightweight construction material and in other vessels and cooking.

 

 

1937_Untitled.png

 

 

In, Ga and Tl are much less common substance, collect in small amounts from sulfide minerals of other elements and used only in specialized applications. The metals are less performing than aluminum in which the much bigger negative slope (negative electrode potential of Al is apparent. Thallium elements are extremely toxic but do not usually pose an environmental hazard because they are little used.

 


Related Discussions:- Aluminum ,thallium

What are metal oxides and oxoanions?, The elements of first transition seri...

The elements of first transition series from variety of oxides of different oxidation states having general formulae  MO, M 2 O 3 , M 3 O 6 , MO 2 , MO 3 . These oxides are gene

Block structure-many-electron atoms, The filling of the table defined above...

The filling of the table defined above leads to a natural division of the periodic table into blocks according to the outer electron configurations of atoms (see Fig. 2). All s blo

Calculation of the performance of the harperlake solar farm, The HarperLake...

The HarperLake solar farm is located in Mojave Desert close to Daggett, CA. The solar radiation in Daggett is provided by the following table from: The HarperLake solar fa

Unity of hardnes, write the different units of hardness with their relatio...

write the different units of hardness with their relationship

Electrolysis of water, Electrolysis of Water without Indicator • Assembl...

Electrolysis of Water without Indicator • Assemble the power supply for electrolysis. Attach alligator clips to the separate poles of the battery. Make sure that the wires from

Liquefaction of gases, Assainment of liquefaction of gases in degr...

Assainment of liquefaction of gases in degree 2 nd sem

classification of polymers - semi synthetic polymers, Semi-synthetic polym...

Semi-synthetic polymers Rayon and other cellulose derivatives such as cellulose nitrate, cellulose acetate so on, are semi-synthetic polymers. These illustrated as thermoplasti

Quantum numbers, For which of the following sets of four quantum numbers, a...

For which of the following sets of four quantum numbers, an electron will have the highest energy:             n            l             m            s

Reaction, how analysis of iodine value

how analysis of iodine value

The following explains light both as a stream of particles, Which one of th...

Which one of the following explains light both as a stream of particles and as wave motion: (1) Diffraction (2) γ= h/p (3) Interference    (4) Photoelectric effect

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd