It is rare to find a 4 plus ion of carbon because of the increasing energy required to ionize carbon. Ionization energy increases with each time.
why is it rare to find +4 ion of carbon
Yes - but it is rare - usually has a + 2 charge
In the hydronium ion (H3O+), the oxidation number of carbon is +3.
CO is the chemical formula of carbon monoxide; it is not an ion.
Carbon monoxide is not a polyatomic ion. In fact, it isn't an ion at all! Carbon monoxide does consist of two different elements (and is therefore a bimolecular compound), but it is a neutral species.
Carbon's symbol is C. A carbon atom has no charge, but a carbon ion has a +2 charge.
Yes - but it is rare - usually has a + 2 charge
If I interpret your question correctly, C is the element Carbon. When followed by a plus (in speaking) or a plus symbol it means it has a charge of one unit (elementary charge - charge on one electron). Because Carbon is defined as an atom with 6 protons, this means the Carbon in question must have 5 electrons. Thus it is an ion.
In the hydronium ion (H3O+), the oxidation number of carbon is +3.
The ion carbon C4+ has 6 protons and 2 electrons.
The atomic number of carbon is 6 It is a negative ion
You call it an ion of that isotope. Let's use carbon-14 for example. If a carbon-14 atom gains/loses an electron, you simply call it a "carbon-14 ion".
CO is the chemical formula of carbon monoxide; it is not an ion.
how many protons does the carbonate ion have?
The bicarbonate ion.
It is a positive ion. Its charge is 4+ Edit: This answer is incorrect.
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Carbon monoxide is not a polyatomic ion. In fact, it isn't an ion at all! Carbon monoxide does consist of two different elements (and is therefore a bimolecular compound), but it is a neutral species.