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Answer : The halogen group of non metals and metalloids these regions will exhibit the trend of having positive and negative oxidation numbers. They are placed on right side of the modern periodic table. The trend of having two oxidation states where one is positive and other is negative in the Groups 13 to 16 of the modern periodic table which contains one or more metalloids, in addition to metals, nonmetals, or both.
Answer:
Explanation:
A Lewis acid is defined as a chemical species that contains an empty orbital which accepts an electron pair from a Lewis base to.
A Lewis base is defined as any species that has a filled orbital containing an electron pair which is not involved in bonding but forms a dative bond with a Lewis acid.
A. Fe3+ + 2H2O --> FeOH2+ + H30+
Fe3+ - Lewis acid
H2O - Lewis base
B. H2O + H- --> H2 + OH-
H- - Lewis acid
H2O - Lewis base
C. 4CO + Ni --> Ni(CO)4
CO - Lewis base
Ni - Lewis acid