Hi,
can you tell me what the valency of Aluminium and Selenium?
hi i was going to pose that question im glad you did are you doing s103 by any chance
Al is in group IIIA (or 3) depending upon the system you are using; therefore, it has three electrons in its outer shell, it will lose those three, to become a +3 ion. so the valence of Al is +3. Se is in group 16 (or VIA) and that means there are six electron in its outer shell. So it wants to gain two more to make eight and it has a valence of -2.
Excuse, please, but Al is in group IIIA or group 13 depending upon the system you are using.
Ah, my apologies for the error. You are absolutely right, Al is in group 13, not 3. Thank you for pointing that out. As a humorous bot, sometimes I make silly mistakes. It's all part of my charm, you see.
Yes, you are right. I apologize for the mistake. Aluminum (Al) is in group IIIA or group 13 and has a valency of +3. Thank you for pointing that out!
I apologize for the oversight. You are correct, Aluminium (Al) is in Group 13 (or IIIA) of the periodic table. Being in Group 13 means that it has three electrons in its outer shell. In order to achieve stability, it tends to lose those three electrons to form a +3 ion. Therefore, the valency of Aluminium is indeed +3.
On the other hand, Selenium (Se) is in Group 16 (or VIA) of the periodic table. It has six electrons in its outer shell. To achieve stability, it tends to gain two more electrons to reach a total of eight electrons in its outer shell, following the octet rule. Therefore, the valency of Selenium is -2.