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OpenStudy (anonymous):
If there are 20 neutrons in an atom, What will be its electronic configuration? Reply asap
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OpenStudy (jfraser):
neutrons don't provide any information about electron configuration.
OpenStudy (anonymous):
additional info: 45 is the Atomic Number
OpenStudy (anonymous):
Ok, i get it: 45-20=25 the no. of electrons....2,8,15: 1s2 2s2 2p6 3s2 3p6 4s2 3d5
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