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a. 'Hormones are chemical messengers.' Explain? b. Name the main disease caused due to lack of the vitamin and its source in each of the following: A, B 6 and E.
characteristics of group 13 elements
Draw out the Lewis structures of the following two compounds. BeCl 2 + 2Cl- → (a) Determine which compound is the Lewis acid and which is the Lewis base. What are the
use and purpose 0
what is colloid?
formation of polyfunctional compounds
what is meant by abnormal molecular mass of solute ? discuss the factors which bring abnormality in the experimentally determined molecular masses of solutes using colligative prop
what is wurtz reaction?
The total number of orbitals in an energy level designated by principal quantum number n is equal to: (1) 2n (2) 2n 2 (3) n
The number of d electrons in Fe +2 (atomic number of Fe= 26 ) is not equal to that of the: (1) p-electrons in Ne (At. No.= 10) (2) s-electrons in (At. No.= 12)
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