"Write the nuclear symbol for a chloride ion which has an additional electron. (Mass number is 37 and atomic number is 17.)"
And could you also explain how you got the answer?
Thanks
And could you also explain how you got the answer?
Thanks
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There are two common isotopes of chlorine, some chlorine atoms have a mass of 37, and others have a mass of 35.
The difference between them is that one has two extra neutrons, but the number of protons and electrons is the same.
As for chloride ions, they have one extra electron; that's 18 electrons, which completes the outer shell. It would be very unusual for a chloride ion to gain one more than that (ie; 19 electrons)
The symbol would be Cl with a minus sign, and a 17 and a 37 to the left of the Cl-
the 37 above the 17
37 superscript and the 17 subscript.
The difference between them is that one has two extra neutrons, but the number of protons and electrons is the same.
As for chloride ions, they have one extra electron; that's 18 electrons, which completes the outer shell. It would be very unusual for a chloride ion to gain one more than that (ie; 19 electrons)
The symbol would be Cl with a minus sign, and a 17 and a 37 to the left of the Cl-
the 37 above the 17
37 superscript and the 17 subscript.