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Usimov [2.4K]
3 years ago
8

when sodium atom reacts with chlorine atoms form a compound, the electron configurations of ions forming the compound are the sa

me as those in which noble gas atoms
Chemistry
1 answer:
11Alexandr11 [23.1K]3 years ago
4 0
A sodium atom has the electron configuration of [ 2,8,1 ] before bonding with a chlorine atom which has the electron configuration of [ 2,8,7 ].

because sodium becomes a one plus ion ( +1 ), it must lose an electron to become stable therefore when bonded the electron configuration becomes [ 2,8 ] this is the same as the noble gas, Neon [ 2,8 ].

because chlorine becomes a minus one ion ( -1 ), it must gain an electron to become stable therefore when boded the electron configuration becomes [ 2,8,8 ] this is the same as the noble gas, Argon [ 2,8,8 ].

hope this helps :)
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