Tuesday, April 29, 2014

BORON GROUP
Z
Element
No. of electrons per shell
5
boron
2, 3
13
aluminium
2, 8, 3




31
gallium
2, 8, 18, 3
49
indium
2, 8, 18, 18, 3
81
thallium
2, 8, 18, 32, 18, 3
113
ununtrium
2, 8, 18, 32, 32, 18, 3


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