Oxidation number of an atom is the charge that atom would have if the compound is composed of ions. In neutral substances that contains atoms of one element the oxidation number of an atom is zero. Thus atoms in O2, Ni2, and aluminium all have oxidation number of zero.
In this case, Ni2, the oxidation number of Ni atom is zero,
for NiO4-, assuming oxidation number of Ni is x
(x ×1) + (-2 × 4) = -1
x = + 7
Therefore, the oxidation number goes from 0 to +7
To find the number of neutrons, subtract the number of protons from the mass number. number of neutrons=40−19=21.
Answer:
metal ball that moves at high speed
Explanation:
Best Answer:<span> </span><span>LiCl
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glucose
BeF2
last question answer 3 strong electrostatic requires a lot of energy
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Answer:
-1160kj/mol
Explanation:
the reaction is exothermic because heat is released to the environment
