Question

name a black metallic oxide which is reduced by a basic gas

correct and rewrite the following:
addition of sodium hydroxide to alumina reduces its fusion point
in periodic table the number of shells remains same down a group
carbon tetra chloride is a non electrolyte because it contains free electrons
electrolysis of lead bromide forms lead at cathode
ammonia gas turns red litmus to blue

give reason why
ionization potential decreases down a group
calcium hydroxide is preferred over sodium hydroxide in laboratory preparation of ammonia
Cao is not used in the purification of hydrochloride gas


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Answer 1

Answer:

name a black metallic oxide which is reduced by a basic gas ?

Lead oxide

give reason why

ionization potential decreases down a group ?

Conversely, as one progresses down a group on the periodic table, the ionization energy will likely decrease since the valence electrons are farther away from the nucleus and experience greater shielding. They experience a weaker attraction to the positive charge of the nucleus.

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