These elements would have some electrons in their 5g subshell and thus have more than 32 electrons in the O shell -LRB- fifth principal shell -RRB- . The valence shell is the outermost shell of an atom .
In a noble gas , an atom tends to have 8 electrons in its outer shell -LRB- except helium , which is only able to fill its shell with 2 electrons -RRB- .
In a noble gas , an atom tends to have 8 electrons in its outer shell -LRB- except helium , which is only able to fill its shell with 2 electrons -RRB- .
用更简单的方式重写这句话: These elements would have some electrons in their 5g subshell and thus have more than 32 electrons in the O shell -LRB- fifth principal shell -RRB- . The valence shell is the outermost shell of an atom . 输出: