Question

out of these, which is the formula ni?​

Answer 1

Answer:

The formula Ni belongs to the element Nickel

Answer 2

Step-by-step explanation:

it is given that nickel oxide has the formula as Ni0.98O1.00.

As per the formula, there are 98 Ni ions for 100 oxide ions.

Out of 98 Ni ions, let x ions be in +2 oxidation state.

98−x ions will be in +3 oxidation state.

Oxide ion has −2 charge.

To maintain electrical neutrality, total positive charge on cations = total negative charge on anions.

2x+3(98−x)+100(−2)=0x=94

Fraction of Ni2+ ions =9894=0.96

Fraction of Ni3+ ions =9898−94=0.04

Hence, the fractions of nickel that exists as Ni2+ and Ni3+ are 0.96 and 0.04 respectively.

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