Hamad Chemistry Basic Concept 27/05/2020 A. arsenic B. uranium C. iodine D. nickel Related Mcqs: Percentage of calcium in calcium carbonate is___________________?A. 80% B. 30% C. 40% D. 20%... The mass of decimole of electrons (NA) is___________________?A. 1.008 mg B. 0.184 mg C. 0.054 mg D. 5.4 mg... Which of the following statements is wrong about isotopes ?A. they possess different mass number B. they possess different physical properties C. they possess same chemical properties D. they possess different position in the periodic table... A solution has pH = 0 its H+ ion concentration is__________________?A. 1 x 10-1 B. 1 x 10-14 C. 1 x 10-7 D. 1... Which of the following elements has greater 1st ionization energy__________________?A. B B. C C. N D. O...
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