Answer:
Explanation:
Molar mass of KF= 39 + 19= 58g/mol
Mass of KF = 109g
Amount = mass/molar mass
Amount = 109/58
Amount = 1.9moles
The d-block elements are found in groups 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 of the periodic table.
So your answer is A) Transition metals
Answer:
The answer is...
Explanation:
Constructive Interference
Answer: a for the first one , d for the second one, b for the third one.
Explanation:
Answer:
Oxide of manganese, Potassium permanganate, Manganese bromide and manganese oxide.
Explanation:
1. Manganese dioxide
Its chemical formula is 
. It is +4 oxidation state. It is a black solid which is fairly stable.
2. Potassium permanganate
Its chemical formula is 
. It is commonly used in the laboratories as oxidizing agent. They appear black in color.
3 Manganese bromide
Its chemical formula is 
4. Oxides of manganese
Chemical formula is 
The most stable state of Manganese is +2 oxidation state.
