Homework Help: chemistry

Posted by Allura on Thursday, November 17, 2011 at 11:49pm.

I wanted to check my True and False Chemistry HW. I am not 100% they are correct.

1.the number of neutrons in an atom is reffered to as its atomic number False

2.the periodic table is arranged by increasing atomic number True

3.atomic number is equal to the number of electrons in an atom False

4.the number of protons in an atom identifies it as an atom of a particular element. True

5.most atoms have either a positive or a negative charge True.

Can you tell me if I am right. Thanks

chemistry - DrBob222, Friday, November 18, 2011 at 12:51am
3 and 6 are incorrect.
3. The atomic number is the number of protons in an atom; however, since the number of electrons is the same as the number of protons in the neutral atomm, then number of electrons is the atomic number also.
6. Atoms are neutral. All atoms are neutral. If they lose or gain electron(s), then they become ions.

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