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The covalent compound HCl has the ionic character as: (1) The electronegativity of hydrogen is greater than that of chlorine (2) The electronegativity of hydrogen is equal
Please explain the calculations involved in Kjeldahl''s method for estimating nitrogen
The ratio between the neutrons in C and Si with respect to atomic masses 12 and 28 is: (1) 2 : 3 (2) 3 : 2 (3) 3 : 7 (4) 7 : 3 Ans: 3 : 7
explain resonance with examples.
The α -particle scattering experiment of Rutherford concluded that: (1) The nucleus is made up of protons and neutrons (2) The number of electrons is exactly equal to number
What are three modifications to a polymer that can make it transparent? How will these modifications affect the mechanical properties of the polymer?
The maximum number of electrons which each sub-shell can occupy is: (1) 2n 2 (2) 2n (3) 2 (2l+1) (4) (2l+1) Ans: 2
The ratio of area covered by second orbital to the first orbital is: (1) 1 : 2 (2) 1 : 16 (3) 8 : 1 (4) 16 : 1 Ans: 16 : 1
FIND HYBRIDISATION OF NITROGEN IN NO
The atomic number of an element is 35 and mass number is 81. The number of electrons in the outer most shell is: (1) 7 (2) 6 (3) 5 (4) 3 Ans: 7
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