Tin and lead, Chemistry

Assignment Help:

 

GROUP 14: TIN AND LEAD

Tin and lead give some resemblance to the lighter elements in group 14, especially Ge. Although they are uniquely more metallic in their physical and chemical characteristics, simple cationic chemistry is the exception rather than the rule. As with group 13, two oxidation states MIV and MII are found, the MII form giving more stable for lead.

Both substances have rather low abundance, but are commoner than other heavy metals. They occur in the minerals galena PbS and cassiterite SnO2. They each have various stable isotopes, Sn more than any other element (10). Some Pb isotopes are discovered from the radioactive decay of uranium and thorium. The isotopic composition of Pb (and thus its atomic mass) differs detectably according to the source, and such variations have been used to estimate the age the Earth of and of rocks.

The elements are readily made by reduction of their ores and are soft, low-melting, somewhat unreactive metals. Tin is required for plating, and both elements in low-melting alloys and as many elements. Applications of lead are declining as its substances are very toxic. A continuing major need is in leadacid batteries, which depend on two reactions involving the PbII, Pb0 and PbIV states:

 

988_Untitled.png

Occurring at different electrodes, these show a cell potential of 2 V, greater than can be obtained easily from any other pair of electrode reactions in aqueous solution


Related Discussions:- Tin and lead

What are numerous products and application of mica, What are numerous produ...

What are numerous products and application of mica? Applications and products of mica: (i)  Sheet mica: Mainly used in electrical equipment and applications in form of w

Stoichiometry, give 2 exaples of computatins in stoichiometry

give 2 exaples of computatins in stoichiometry

Physical change and chemical change, what are the similarities of chemical ...

what are the similarities of chemical and physical change

Sn2 rection, what is the hybridization of transion state of sn2 rection

what is the hybridization of transion state of sn2 rection

Lanthanide chemistry, Why lanthanides shows more than 7 coordination number...

Why lanthanides shows more than 7 coordination number

Number of neutrons in heavy hydrogen atom is, Number of neutrons in heavy h...

Number of neutrons in heavy hydrogen atom is: (1) 0        (2) 1        (3) 2        (4) 3 Ans:  1

Hydrogen, hydrogen behave as a metal at low pressure only why

hydrogen behave as a metal at low pressure only why

Partial oxidation of benzene-reaction-stripping, Consider a process for the...

Consider a process for the partial oxidation of benzene to produce maleic anhydride (C 4 H 4 O 4 ) using air. There are two reactions to be concerned with: The first partially oxid

Lab glassware, do bases react with lab glassware?

do bases react with lab glassware?

The de-broglie wavelength of a particle with mass, The de-Broglie wavelengt...

The de-Broglie wavelength of a particle with mass 1gm  and velocity  100m/ sec is: (1) 6.63 x 10 -53 m                             (2) 6.63 x 10 -34 m                (3

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