Mccarthy Floyd
10/25/2024 · Elementary School

(b) Fill in the blanks. (i) Hydrogen is prepared in the laboratory by the reaction of hydrochloric acid. (ii) The number of shells is equal to the number of (iii) Arsine gas is an impurity present in hydrogen which can be removed by passing the gas (iv) Hydrough is not collected by the downward displacement of air, because it forms (v) Group with air.

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(i) Hydrogen is prepared by reacting hydrochloric acid with zinc. (ii) Number of shells equals the number of periods in the periodic table. (iii) Remove arsine gas from hydrogen with copper(II) sulfate. (iv) Hydrogen not collected by air displacement due to explosive mixture. (v) Group 1 with air.

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