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Which of the following species are not known? (a) AgOH (b) PbI4 (c) PI5 (d) SH6 (e) All of the above

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Option b
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(e) All of the above
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d
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PGT CHEMISTRY 12 year experience teaching XI-XII Students

SH6
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SH5
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I have just entered class 11 and want to prepare for IIT-JEE. How do I manage between school and coaching?
Focus on JEE classes as most of the students do. You can cover your class course easily after these classes before exams.
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Which one of the following alkaline earth metal carbonates is thermally most stable?
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State as to why
(a) Alkali metals show only +1 oxidation state. (b) Na and K impart colour to the flame but Mg does not.(c) Lithium on being heated in air mainly forms the monoxide and not the peroxide.(d) Li is the best reducing agent in aqueous solution.

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Many thermodynamically feasible reactions do not occur under ordinary conditions. Why?

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