Kakmelina3t9ooki Kakmelina3t9ooki

20-10-2016
Chemistry

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What element mass number is 11 has 6 neutrons and average mass number of 10.81?

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MacSuzy MacSuzy

23-10-2016

Valence electron- 2.8.1( mass number 11), so it is situated in group 1. The mass number indicates Na- sodium. Proton number would be 11+6=17. Neutron number is counted by subtracting mass number and proton number. So I conclusion the ans would be sodium.

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