Ionic (brackets needed)
[Be] 2+ [S] 2- (be loses 2 electrons, sulphur gains 2)
[Na2] 1+ [O] 2- (each sodium loses 1, oxygen gains 2)
[Al] 3+ [Br3] 1- (aluminium loses 3, each bromine gains 1)
Covalent i can't help with since you have to draw them out, but they should all share electrons to create full outer shells
so H + H =H2, draw 2 H's with 2 crosses in between them
for F+F =F2, you need to draw 2 F's with seven crosses surrounding each F and make sure the both share 2 electrons so they have six free ones and 2 shared so they have 8 each
2007-11-12 11:17:43
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answer #1
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answered by ~LOZ~ 6
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The first step is to look in your chemistry textbook. You will find the answers to your questions in its pages. The second step is to look at the copious notes you took when you attended chemistry class. Most teachers will have examples very similar to the questions on the homework or in the test. The third step is to go to your teacher if you are having trouble with a concept and have him/her go through a few problems with you. Note that having someone else do your homework is a sure guarantee that you will not learn the material when it comes time for an exam. And an exam is sure to have problems similar to what was on your homework.
If you are desperate, put your chemistry book under your pillow. Maybe, as you sleep, the knowledge in the textbook will creep by osmosis into your subsconscious, but it will need a semipermeable membrane for that to work. Most students who don't study have been shown through many funded studies to have a membrane that could be a substitute for solid stone, so this probably won't work in your case.
Sorry, that's the best I can do without cracking the books myself, but my last chem class was in 1967.
2007-11-12 19:18:56
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answer #2
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answered by Dalgor 5
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Home work/chemistry Category.
2007-11-12 19:10:14
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answer #3
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answered by ♕ℭrown ƒit me good♕ 6
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2007-11-12 19:14:00
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answer #4
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answered by Curly 3
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Yes, I agree completely.
2007-11-12 19:10:31
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answer #5
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answered by Rick R , Super Duper Samurai 侍 7
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i don't understand. What do u need? If u mean adding them, it's easy, just like math. If not, sorry!
2007-11-12 19:10:28
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answer #6
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answered by raptureready1217 3
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you should've put this question in the science & mathematics category
2007-11-12 19:10:49
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answer #7
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answered by JUUUULIA 5
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Oh wow! Im blonde. LoL! I didnt know letters could be added together to. I thought maybe it was like Be+S=bes?
And Na-2+o=no? Duh Im wrong. lol
2007-11-12 19:15:59
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answer #8
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answered by rainedrop61 4
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OMG WOW THIS S$%t IS HARD,,,lol
2007-11-12 19:12:30
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answer #9
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answered by NR77 2
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I'm not a chemist.
2007-11-12 19:12:06
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answer #10
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answered by fluorescent adolescent 4
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