2006-12-16 00:55:13 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Any element in group 2. e.g magnesium, calcium. Lower down the group the better they do so. Saying Alkali metals is incorrect as group one metals only ever form 1+ ions. Also many of the transition metals can be found as 2+ ions but not always, e.g. copper can be 1+ or 2+, iron can be 2+ or 3+.
2006-12-16 01:02:46 · answer #1 · answered by fraeya w 1 · 0⤊ 0⤋
Any atom in column 2A of the periodic chart will readily become a 2+ ion because that is how it attains its ideal electron configuration (that is why helium is on the opposite side of the chart even though it has 2 valence electrons; it is covalent and will not yield electrons to other atoms). Also, several of the transition metals can be found as 2+ ions, but are not always.
2006-12-16 09:20:47 · answer #2 · answered by Beast8981 5 · 0⤊ 0⤋
The alkali metals readily yield 2+ ions because that is how they can obtain an octet and have the configuration of the noble gas closest to them...ionization energy decreases down a group so the atom at the bottom, is the one that ionizes the easiest:)
2006-12-16 09:00:23 · answer #3 · answered by jill_quitayen 2 · 0⤊ 0⤋
Any element in second group.
2006-12-16 09:28:12 · answer #4 · answered by annie 2 · 0⤊ 0⤋