____ is the most electropositive and ___ is the most electronegative element of the third period of modern periodic table.
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What is dry ice?
What are isobars?
The Chemical formula of Acetic acid is _____.
For the aquatic organisms, the source of food is
The predominant stage of the life cycle of a moss is the gametophyte which consists of two stages. The second stage is the ___________ stage.
__________gives hardness to stainless steel.
In the reaction H2O2 + Cl2 -----> 2HCl + O2, H2O2 acts as