Which one of the following statements about the four atoms/ions below is correct?
1 Like
23 11 Na+ has Z=11 and A=23 therefore it has 11 protons, 10 electrons (because it donated one to be positively charged) and neutrons A-Z=23-11=12
With the same way of thinking
23 11 Na+ 11 protons , 10 electrons, 12 electrons
8 16 O 2- 8 protons, 10 electrons, 8 neutrons
8 18 O 8 protons, 8 electrons, 10 neutrons
16 32 S 16 protons, 16 electrons, 16 neutrons
Now we look at the statements:
A: incorrect because nr of electrons is different
B: incorrect because all also the other oxygen isotope has 2 more electrons
C: CORRECT, no need to look at other answers
1 Like