What is the chemical formula for nickel (iii) oxide? nio ni3o nio3 ni2o3

Hello!

The chemical formula for Nickel (III) Oxide is Ni₂O₃

In chemical nomenclature, we read from left to right:

Then we combine the two ions as follows, multiplying each one by the charge of the other to neutralize the charges:

2Ni⁺³ + 3O⁻² → Ni₂O₃

So, the chemical formula is Ni₂O₃

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Putting this here just because the answer seems to have some blurry/unreadable parts, I do not take credit for solving this question... The answer is Ni2O3

Explanation:

1). 2Cs + F2 ---> 2CsF

assigning the oxidation number to reactants and products of the above reaction:

Reactant = Cs +  F2 (oxidation number of Cs = +1, oxidation number of F2 = 0)

Product = CsF ( Oxidation number of Cs in CsF is +2 and F is -1)

oxidized element in the reaction is one with increase in oxidation number

Oxidation number of Cs increases from +1 to +2

F is reduced because oxidation number is decreased from 0 to -1.

F is the oxidizing agent because it got reduced in the reaction.

2). Balanced equation:

                                        Sn + HNO3 ---> SnO2 + NO2 + H2O

oxidation numbers          0      +1+5 -2 ⇔ -2+4-2    +4-2   +1-2

oxidation reaction= Sn ⇒ SnO2 + 4 e-

                                  0       +4 -2

reduction reaction = HNO3 + e- ⇒ NO2

                                  +1+5-2              +-2

combining the oxidation and reduction reaction equation, we will balance them by balancing the charges on them.

Sn + 2H2O ⇒ SnO2 + 4 e- +4 H+

HNO3 + e-+H+ ⇒ NO2 +H20

final reaction=

Sn + 4HNO3        SnO2 + 4 NO2 +2H20

0    +1+5-2             +4-2       +4-2      

Charges on both the sides of reactant is

4 =  4

hence equation is balanced.

3 ) Voltaic cell and electrolyte cell difference is that voltaic cell converts chemical energy into electrical energy. Electrons are provided by redox reactions while in electrolyte cell electrical energy is converted to chemical energy and electron is given by external AC or DC battery.

Voltaic and electrolyte are similar as both these convert energy forms  and require electron source for the reaction.