The acceleration is -8.89 m/s
I believe the correct answer would be barium. It is the element between the two that would lose one electron more easily. This is because it has a higher first ionization energy which means the that the probability of it existing as an ion would be higher than magnesium.
Is really don’t know it like that sorry
Three hydrogen will provide three valence electrons and nitrogen has five valence electrons all in all they 8 valence electron
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H*«N«*H=NH3
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H
