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Describe a method that could be used to separate the components of the following a) Sand and iron filings b) Sawdust and lead pellets c) Salt and glass particles d) Silt (water and
Which of the following set of quantum numbers is correct for the 19th electron of chromium: n l m s (a) 3 0
what is the relationship between the rate of cooling and the size of crystals?
explain industrial manufacturing process of westron
The elements of this group form a number of compounds with halogens. The halogen compounds of S. Se, Te and Po are called as halides. For oxygen, only the fluoro compounds
A cubic solid is made of two elements X and Y. Atoms V are at the corners of the cube and X at the body centre. What is the formula of the compound?
Calculate the molarmass of a nonelectrolyte that lowers the freezing point of 25.00g of water to -3.9 degrees C when 4.27 g of the substance is dissolved in the water.
The electronic configuration 1s 2 , 2s 2 , 2p 1 x , 2p 1 z : (1) Oxygen (2) Nitrogen (3) Hydrogen (4) Fluorine Ans: Nitrogen
Q. Explain the structure of Single covalent bonds? Ans. Atoms tend to achieve the stable electron configuration of a noble gas when forming a bond. In covalent bonding thi
reasons of failure
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