5. Sodium is a metal and sulfur is a non-metal....why we classify them this way??
Group (I),(II),(III) excluding boron are metals. Group (IV),(VI),(VII),(VIII) or group 0 including boron are non-metals.Metals lose electrons and Non-metals gain electrons to complete and stablise the valence shell. therefore sodium are classify under metal as it falls under group(I) and sulfur is a non-metal as it falls under group (VI). Sulfur (2.8.2) is a non-metal as it will gain 2 electrons to complete the valency shell( to make it stable), sodium (2.8.1) is a metal as it will lose 1 electron to complete the valency shell(to make it stable).
heyhey!
ReplyDeleteyour answers are great, i hope i can learn from you. for the first question. instead of writing ' to make it stable ', maybe you can write 'to achieve stability '. maybe i can learn from you by saying theelectronic configuration inside the explanation as well. Also, you can try to draw the atoms and ions in powerpoint and after that transfer it here by posting. In addition, you may also help to say for the last question, exceptional for non metals like water and lemon which can conduct electricity.