what is the number of elctrons, protons, neutrons in CO3^2-??
Answers
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##ANSWER##↡↡↡↡↡↡↡↡↡↡↡↡↡↡↡↡↡↡
The number of nuclear protons are the number of positively charged particles contained in atomic nuclei.
Z
, the atomic number,
=
6
for carbon, and
8
for oxygen. In the carbonate atom nuclei there are therefore 30 positively charged protons.
So how many electrons on carbonate? There are 6 from carbon, 24 from oxygen, PLUS 2 extra negatively charged particles from the formal charge on the anion. 32 electronic charges (
−
32
) versus 30 protonic charges (
+
30
). There is a formal charge of
−
2
on the carbonate anions, the which we conceive to be on the oxygen atoms (the doubly bound oxygen is neutral, whereas each of the singly bound oxygen atoms bears a negative charge), to give
O
=
C
(
−
O
−
)
2
Of course this assignment of charge is a formalism; and we would distribute the charge over the oxygen centres by resonance.
Answer:
Number of electrons = 32
Number of protons = 30
Number of neutrons = 30
Explanation:
It is given ;
Carbonate ion : CO₃²⁻
So it has Carbon and Oxygen
Therefore, for Carbon :
Atomic number of Carbon = 6
Number of electrons = 6
Number of protons = 6
and for oxygen :
Atomic number of Oxygen = 8
Number of electrons = 8
Number of protons = 8
Hence, Number of electrons in CO₃²⁻ = 6 + (3 x 8) + 2 = 32 electrons
Number of protons in CO₃²⁻ = 6 + (3 x 8) = 30 protons
and we know that :
Mass number = number of neutrons + number of protons
So, (1 x 12) + (3 x 16) = Number of neutrons + 30
or, number of neutrons = 60 - 30 = 30
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