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Chemical tests of four metals A. B. C, and D show the
Chapter 21, Problem 74P(choose chapter or problem)
Chemical tests of four metals A, B, C, and D show the following results.
(a) Only B and C react with 0.5 M HCl to give \(\mathrm{H}_{2}\) gas.
(b) When B is added to a solution containing the ions of the other metals, metallic A, C, and D are formed.
(c) A reacts with 6 M \(\mathrm{HNO}_{3}\) but D does not.
Arrange the metals in the increasing order as reducing agents. Suggest four metals that fit these descriptions.
Questions & Answers
QUESTION:
Chemical tests of four metals A, B, C, and D show the following results.
(a) Only B and C react with 0.5 M HCl to give \(\mathrm{H}_{2}\) gas.
(b) When B is added to a solution containing the ions of the other metals, metallic A, C, and D are formed.
(c) A reacts with 6 M \(\mathrm{HNO}_{3}\) but D does not.
Arrange the metals in the increasing order as reducing agents. Suggest four metals that fit these descriptions.
ANSWER:Step 1 of 5
Metals
Elements in the periodic table that show malleability and ductility in the solid phase are called metals. These properties are called metallic properties. Metals can conduct heat and electricity.
Most elements in the periodic table are metals. The metallic character of an element increases down the group due to the increase in atomic radii of the element.
Metals have high density, removing electrons to acquire complete octet configuration. Therefore, they form cations in an aqueous solution.
d-block elements also have metallic characters, and the metallic character decreases along the period.