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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
schematic diagram for osvw
Q. a. What is the origin of fossil fuels? b. List three fossil fuels. c. Are fossil fuels a renewable resource? Answer: a. Coal, natural gas and oil. b. Fossil fue
calculate the molarity of sodiun in 0.66ml water
Leibermann nitro test why we add concentrated acid
The series limit for Balmer series of H-spectra is: (1) 3800 (2) 4200 (3) 3646 (4) 4000 Ans: 3646
The uncertainty in the position of a moving bullet of mass 10 gm is 10 -5 m . Calculate the uncertainty in its velocity: (1) 5.2 x 10 -28 / sec (
i need help finding information with the element sodium
Refining of petroleum: Petroleum (crude) extracted from earth's crust is an intimate mixture of many organic compounds. Crude petroleum needs to be purified and its components
An ionic compound is generally a : (1) Good electrolyte (2)Weak electrolyte (3) Non-electrolyte (4) Neutral Ans: Good electrolyte
An atom with atomic number 20 is most likely to combine chemically with the atom whose atomic number is: (1) 11 (2) 14 (3) 16 (4) 10 An
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