SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Element X is located in the same group as copper in the periodic table. Which of the following is true about element X?
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X is a transition metal.
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X is a gas.
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X can be a catalyst.
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X can form coloured compounds.
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Explanation:
Detailed explanation-1: -Halogens that belong to group 17 of the periodic table are usually denoted using the letter ‘X’. Fluorine, chlorine, bromine, iodine, and astatine belong to group 17. They are highly electronegative and have a valency of-1.
Detailed explanation-2: -Therefore, A shiny brown element ‘X’ which on heating in air becomes black in color is basically Copper element and black colored compound formed is Copper oxide.
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