Oxidation number of o is -2. Oxidation number of H is +1.
-1
of course!
Zn is a d block element. Oxidation number of it is +2.
The oxidation number determines how much an element is oxidated, so the oxidation number of...1. elements is always 0.2. of simple ions is always the charge, e.g. in Cu2+ the oxidation number of copper is +2.3. hydrogen is usually +1, oxygen usually -2, alkali metals +1, etc.In molecules without a charge, the sum of the oxidation numbers has to be 0. This way you can calculate the oxidation number of its compounds. For example in KMnO4, the oxidation number of oxygen is -2, of K is +1, so if the sum is zero then the oxidation number of Mn has to be +7.In complex ions (OH-, MnO4-, ...) the sum of the oxidation numbers has to be the charge of the ion. (so in OH- and MnO4- it's -1).
Barium hydroxide has five atoms in the molecule.
Ox(N)= -3
+2 for iron, +1 for hydrogen and -2 for oxygen in Fe(OH)2
The OH moiety has a 1- charge, so with two of them you have a -2 charge. This makes the oxidation number of F 1+ since two of them will then combine with the 2 OH^-. Further, within the OH moiety, the O has an oxidation number of 2- and the H has an oxidation number of 1+.
Zn is a d block element. Oxidation number of it is +2.
The oxidation number determines how much an element is oxidated, so the oxidation number of...1. elements is always 0.2. of simple ions is always the charge, e.g. in Cu2+ the oxidation number of copper is +2.3. hydrogen is usually +1, oxygen usually -2, alkali metals +1, etc.In molecules without a charge, the sum of the oxidation numbers has to be 0. This way you can calculate the oxidation number of its compounds. For example in KMnO4, the oxidation number of oxygen is -2, of K is +1, so if the sum is zero then the oxidation number of Mn has to be +7.In complex ions (OH-, MnO4-, ...) the sum of the oxidation numbers has to be the charge of the ion. (so in OH- and MnO4- it's -1).
Barium hydroxide has five atoms in the molecule.
Ox(N)= -3
+2 for iron, +1 for hydrogen and -2 for oxygen in Fe(OH)2
oxidation number of I is -1. oxidation number of F is +1.
Hydrogen's oxidation number is +1.Chlorin's oxidation number is +1.Oxygen's oxidation number is -2.
Minus one for hydroxyl ( -OH) groups, minus two for oxo ( =O) groups.
Zn has oxidation number +2; S has oxidation number -2
Silicon's oxidation number is +4.Oxygen's oxidation number is -2
The oxidation number for H is +1, and the oxidation number for O is -1.