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This among the following elements has the tendency to form covalent compounds:
(1) Ba
(2) Be
(3) Mg
(4) Ca
Ans: Be
The number of unpaired electrons in 1s 2 2s 2 2p 4 is: (1) 4 (2) 2 (3) 0 (4) 1 Ans: 2
Q. Illustrate Born-Haber cycle? Boron is always covalent and does not form,B 3+ ions, because' the energy required to remove three electrons is very high. Many simple compo
the dug known as LSD has the formula C20H25N3O.one suspected sample contained 74.7%C,7.95%H,9.99%N.calculate the theoretical percentages to four significant figures
Purpose
How do we prepare trihydric alcohols?
what are the demerits of Bohr''s atomic model?
Electrons and nuclei The familiar planetary model of the atom was proposed by Rutherford in 1912 following experiments by Geiger and Marsden showing that all the mass of an
a) Write the following about protein synthesis: (i) Name the location where protein synthesis occurs. (ii) How do 64 codons code for only 20 amino acids? (iii) Which of t
Fission of Covalent bond
why we consider carbon as standared for atomic mass unit
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