A base generally releases a hydroxide ion (OH-) when dissolved in water.
There are exceptions, such as ammonia NH3, which acts as a base but does not produce OH- ions. There are three definitions of acids and bases (Arrhenius, Bronsted-Lowry, and Lewis) and each one looks at acid/base characteristics differently. OH- donation is the Arrhenius definition.
I really don’t know. Sorry
It is the transition metals because the first element ever synthed was technetium, but surely you've googled this by now. ;)
Answer:
72.22 g
Explanation:
975 mL Mercury× 13.5 g/mL = 72.22 g