What is the difference between the Group A metals from the Transition metal?
2007-11-18 22:23:51 · 2 answers · asked by *+=trouble maker=+* 3 in Science & Mathematics ➔ Chemistry
Group A metals are alkali metals. They are soft and dull. The transition metals on the other hand are regular shiny, hard strong metals. Group A metals have a valency of one only. The Transition metals have valencies of 1, 2, 3... The Transition metals are sometimes amphoteric metals. i.e. Aluminium and Zinc.
2007-11-18 22:32:52 · answer #1 · answered by Anonymous · 1⤊ 0⤋
In older periodic tables, the p-block elements that came after the transition metals in each row were called Group B, while the transition metals and the s-block in front of them were called Group A. So for example Mn was Group VIIA and Br was Group VIIB.
Just to make it even more confusing, some countries did it the other way round.
Now Mn is in Group 7 and Br in Group 17.That makes life simpler, except that we end up putting F and Cl in Group 17 as well, which is a little bit ridiculous, so some people carry on using the old labels.
2007-11-19 06:36:40 · answer #2 · answered by Facts Matter 7 · 0⤊ 0⤋