How come, with respect to their size, S < S^2-?
Also which is bigger Cl- or S2- and why?
2006-12-15 11:35:52 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
OK, first of all, a charge is NOT an exponent. If you wrtite S^-2, you will only confuse people. It is usually written S 2-. Sorry but that really bugs me.
Now that that's out of the way, S 2- is larger than S because it has two more electrons and the same number of protons. The protons pull the electrons toward the center, making the atom smaller, and the electrons push away from each other, making the atom bigger. If you add more electrons without adding more protons, the repulsive forces get stronger and the electrons spread out into a bigger radius.
Cl- and S 2- have the same number of electrons, but Cl- has one more proton, so the force of the protons pulling the electrons in is stronger in Cl-. Therefore, Cl- is smaller.
2006-12-15 11:45:43 · answer #1 · answered by Amy F 5 · 0⤊ 0⤋
S^2- has to be bigger since it has 2 more electrons than the neutral sulfur. (if you compare the charge of sulfur's protons [16+] to the charge of the atom with 2 extra electrons [18-] that's how you get a charge of 2-.)
Now, a Cl^1- and a S^2- both have 18 electrons so you would expect the same size. But the protons in the nucleus "pull" the electrons in toward the center. Since Cl has 17 protons pulling the electrons in and S ony has 16, the Cl atom will be just a little bit smaller.
2006-12-15 12:12:00 · answer #2 · answered by The Old Professor 5 · 0⤊ 0⤋
The size of an atom increases going left to right across the table and top to bottom going down the table. The largest atoms are in the lower right corner. The increase is due to the increased size of the electron clouds surrounding the nuclei. The larger the atomic number, the more electrons and the larger the electron cloud.
2006-12-15 15:03:12 · answer #3 · answered by lucky_ducky331 2 · 0⤊ 0⤋
you're suited- the actuality that the iodine promises much less helpful nuclear pull skill that the electrons are held much less strongly or pulled inward much less by the nucleus and hence the ion is greater effective.
2016-12-18 14:14:07 · answer #4 · answered by ? 3 · 0⤊ 0⤋
You have to balance this out with elemental chart and see what the proton,neutron ratios are,I ain't doing your homework for you.
2006-12-15 11:40:15 · answer #5 · answered by Rio 6 · 0⤊ 1⤋