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Which one of the following groupings represents a collection of isoelectronic species: (1) NA +, Ca 2+ , Mg 2+ (2) N3, F - , Na + (3) be, Al 3+ , Cl -
describe and explain the charater tables of water and amoniaa molecule
Q. Why we use Boron? Boron is used to increase the hardness of steels. Crystalline boron is used in transistors. Boron is a good neutron absorber and is used as shields and con
does ionization energy ddepends on principal quantum number
alkali metals belong to s-block in the periodic table ,why?
Q. Explain about Peroxoacids of Sulphur? There are two peroxoacids of sulphur, viz., peroxomonosulphuric acid, H 2 SO 5 , and peroxodisulphuric acid, H 2 S 2 O,. These acids ar
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 chem
why He and H cannot liqueified by linde''s method
what evidence is there that all cells have a common ancestor?
Physical properties of Iodoform or tri-iodomethane (a) Iodoform is a yellow crystalline solid. (b) Iodoform has a pungent characteristic odour. (c) Iodoform is not solubl
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