a member of the same family as oxygen whose most stable ion contains 18 electrons
2007-09-15 15:10:53 · 4 answers · asked by summitgirl06 1 in Science & Mathematics ➔ Chemistry
Firstly, "a member of the same family as oxygen" indicates that the element is in group 6 of the periodic table (or 16, depending on the periodic table you're using). "Most stable ion" indicates that there are eight valence electrons. So, going down group six, we go from oxygen to sulphur (or sulfur). As an atom, it has 16 electrons - meaning that it has six in its valence shell. To have eight valence electrons, it needs two more - giving a total of eighteen.
Thus the answer is sulphur/sulfur.
2007-09-15 15:21:10 · answer #1 · answered by skenasis 2 · 0⤊ 0⤋
Remember that most stable means that they look like a noble gas in terms of their electrons. So, the noble gas with 18 electrons is Argon, therefore, you want to find the element in the same family (column) as oxygen and in the same period as Argon. This is, of course Sulfur.
2007-09-15 15:32:52 · answer #2 · answered by lhvinny 7 · 0⤊ 0⤋
sulfur
2007-09-15 15:14:27 · answer #3 · answered by k2koolbchgrl 3 · 0⤊ 0⤋
my guess is chlorine
2007-09-15 15:15:15 · answer #4 · answered by ellorra25 2 · 0⤊ 0⤋