Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Show the rate of decrease in atomic radius?
The rate of decrease in atomic radius along the lanthanide series and also along the actinide series is even less than that in the transition cries, since the difference in the electronic configurations of these component is in the number of electrons in the ante-penultimate (last but two) shell of electrons. But the additive effect of decrease in atomic radius across the fourteen elements of lanthanide series is quite substantial. This decrease in atomic radius across the lanthanide series is defined as lanthanide contraction. Similarly, there is an actinide contraction across the actinide series. As a result of lanthanide contraction, the normal gain in size from Sc+Y+La disappears after the lanthanides. And pairs of elements such as Hf and Zr, Nb and Ta, Mo and W, etc., possess nearly similar sizes. His properties of these elements, thus, are very similar. The similarities in properties within these pairs make their separation very difficult. Thus, due to lanthanide contraction the elements of 5d and 4d transition series resemble each other much more nearly than do the elements of 4d and 3d series.
balance?
Q. Explain Distillation in purification of metals? Metals with low boiling points, such as cadmium, zinc and mercury will be purified by distillation. The distillation is gener
#question:although CO is well known,why doesn''t SiO exist under normal conditions?
i need to know the answer for dis-advantage of scale and sludge
Physical Properties of Acrylic Acid a. Acrylic Acid is colourless pungent smelling liquid. Its boiling point is 141°C. b. Acrylic Acid is miscible with alcohol, water and et
explain in detail the priciple of the reaction
state the adverse effect of common air pollution on buildings and health
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
Most of the transition metal do not displace hydrogen from dilut acid. why? Ans) The activity series of transition metals is less than that of hydrogen so they can not displace h
Uses of Phenol - Hydrocarbon Phenol is extensively used in industry. The important applications of phenol are (i) Phenol is used as an antiseptic in soaps, lotions and ointm
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd