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Q. Explain about Atomic Radius?
The atomic size decreases with increase in atomic number along any period in the long form of the periodic table due to increase in effective nuclear charge. Though, the decrease in atomic radius is small when the difference in electronic configuration from one element to the next is that of an additional inner electron. This is due the additional inner electron screens the size-determining outer electrons from the nucleus much better than an additional outer electron. For example, decrease in the covalent radius from Sc to Zn; i.e., across ten elements of the 3d transition series, is 19 pm. this. Decrease is almost one-third of the decrease in the covalent radius of the seven elements of s and p blocks of the period 3.
Q. Explain about Neutral and Amphoteric oxides? Neutral oxides have neither acidic nor basic properties and when dissolved in water, they give neutral solutions, e.g., CO, N
Distillation under reduced pressure - Purification of organic compounds This process is employed for the purification of high boiling liquids and liquids that decompose at o
what is an atom
a) Write a balanced equation of the formation of dimethyl carbonate by the reaction of methanol with carbon dioxide. How can dimethyl carbonate form if phosgene is the reactant?
The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS 2 . This mineral''s metallic luster and pale brass-yellow hue have earned it the nickname fool''s gold b
fuul explaination
state the adverse effect of common air pollution on buildings and health
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Among the following which property is commonly exhibited by a covalent compound: (1) High solubility in water (2) High electrical conductance (3) Low boiling po
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