Answer:
SO42 - Trigonal planar ion
Explanation:
The SO4^2- ion is tetrahedral and not trigonal planar because the sulphur atom has four regions of electron density which includes the lone pair of electrons on sulphur atom.
This accounts for the observed tetrahedral arrangement of electron pairs around the central sulphur atom in SO4^2- ion, hence the answer.
Salt is produced by the reaction of an acid with a base, alkali or carbonate. Hence, salt is produced through neutralization. As for this question, salt is produced by the reaction where hydrogen ions (H+) of an acid are replaced by the ions of metal (NH4+)
Answer: <span>B. hydrogen</span>
<span>The total energy inside calorimeter will increase.</span>
Answer:
A landform is a natural or artificial feature of the solid surface of the Earth or other planetary body.
Explanation:
For example, valleys, plateaus, mountains, plains, hills etc.
