I am assuming that by 'negative chlorine atom' you mean the ion, Cl- This has 17 Protons
18 electrons,
but the number of neutrons can vary, depending on the individual atom (which isotope)
On average there is 18 1/2, to give a Relative Atomic Mass of 35.45, so 18 or 19 neutrons, possibly others (I don't have a nucleide table sorry).
Chlorine has: 17 Protons 17 Electrons (in a neutral atom i.e. not an ion) (Isotope Mass Number - 17) is the number of Neutrons.
Chlorine has the atomic number of 17. To keep it neutral then, it must have 17 protons and 17 electrons. Chlorine's most common isotope is 35Cl. That means it has 35 - 17 = 18 neutrons.
Chlorine exist as two isotopes(same number of electrons and protons but different number of neutrons), although there are traces of one more but we're not to sure. ~70% of Chlorine is Chlorine-35 which contains 17 electrons and 18 neutrons ~30% of Chlorine is Chlorine-37 which contains 17 electrons and 20 neutrons and ≤1% of Chlorine-36........
Electrons have a negative charge, and protons have a positive charge. If i have more protons(plus charges) than electrons(minus charges) overall the atom will have a positive charge(mabye +1 or +2 etc....depending how many more protons there are compared to electrons) If there are more electrons(minus charges) than protons(plus charges) then overall the atom will have a negative charge(mabye -1 or -2 etc....depending how many more electrons there are compared to protons) These charged atoms are known as ions.
Chlorine (Cl) has atomic number 17, and so it has 17 protons in the nucleus.
17 protons and 17 electrons in chlorine.
chlorine ion has 17 protons and 18 electrons.
Chlorine with 17 protons and a -1 charge has 18 electrons. This is because the number of electrons should equal the number of protons (in this case, 17) plus or minus the charge (in this case, -1).
The chlorine atom has 17 protons and electrons.
In chlorine gas (Cl2), there are 17 protons and 17 electrons in each chlorine atom. Since there are two chlorine atoms in a molecule of chlorine gas, there are a total of 34 protons and 34 electrons in chlorine gas.
Chlorine has: 17 Protons 17 Electrons (in a neutral atom i.e. not an ion) (Isotope Mass Number - 17) is the number of Neutrons.
Chlorine-35 has 17 electrons. Chlorine has 17 protons, and since it is electrically neutral, it also has 17 electrons to balance the positive charge of the protons.
Chlorine is a non metal element. There are 17 electrons in a single atom.
Chlorine 37 has 17 electrons, assuming that it is not an ion. If chlorine 37 was existing as an ion then it would have 18 electrons. The isotope of the element does not affect the number of electrons it has.
17 electrons. The number of protons and electrons is always the same.
17 same number as protons equal charge balance
Chlorine has 17 protons and an atom of Chlorine would have 17 electrons. However a Chloride Ion will have one more electron ie 18 electrons and will be negatively charged.