Answer:
Iron (II) oxide
Explanation:
Chemical formula of the given compound = FeO
The given compound is an oxide.
In oxides, oxidation state of 'O' is -2.
Let oxidation state of Fe be x. It is a neutral compound.
Therefore, x - 2 = 0
x = +2
So, the oxidation state of Fe in FeO = +2
In the nomenclature of inorganic compounds, cation is named first. After that oxidation state of cation is written. Name of anion is written after that.
Cation = Iron
Anion = oxide
So the name of the given compound would be Iron (II) oxide.
C. A magnet causing a metal object to move
Answer:
Explanation:
2AgNO3 + CaCl2 ----> 2AgCl + Ca(NO3)2
The correct answer is the Tyndall effect. This is also known as the Tyndall scattering. It is the light scattering by the particles in a colloid or in a suspension. This phenomenon is used to determine size and density of particles in colloidal matter.