Which list of elements contains two metalloids?(1) Si, Ge, Po, Pb (3) Si, P, S, Cl(2) As, Bi, Br, Kr (4) Po, Sb, I, Xe
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The answer is (1). Si and Ge are both metalloids (semimetals)
Answer:
B
Explanation:
I'm not sure.,jsjajjwkwkpasbxbaakjwiw
2 shells because if you do the electronic configuration:
2,7 which adds up to 9
7 stands for the group it in and it also stands for how many electrons are in the outer shell.
the amount of spaces stands for which period its in therefore it in period 2
Answer:
Answer: D
Explanation:
These all acids are very frequently used in the chemistry so try to remember all this kind of acid.
iodic acid is 
and HI is hydroiodic acid
2Fe2O3, reason is when we add 4Fe + 3O2, we get the same answer, but in a different form.
