3rd electron of Al (aluminum)Please also explain how you got the answer, thanks!
abloungeTheir expensive but they do work.
honestly, i dont understand why people blame their inability to achieve sweet lookin abs on the machinesany ab machine will do the jobthe question you should be asking is, what's the BEST WAY TO STAY COMMITTED to using that ab machinethats usually the problem.
Al has atomic no 13 1s2, 2s2,, 2p6, 3s1, 3p1 3rd electron is in 2s n2, l0, m0 and s+1/2
