What is a valence electron and where it is found?

Is it easier for beryllium to gain 6 more electrons or lose 2 electrons? What charge would beryllium have?

Is it easier for boron to gain 5 more electrons or lose 3 electrons? What charge would boron have?

Is it easier for carbon to gain 4 more electrons or lose 4 electrons? What charge would carbon have?

Is it easier for nitrogen to gain 3 more electrons or lose 5 electrons? What charge would nitrogen have?

Is it easier for oxygen to gain 2 more electrons or lose 6 electrons? What charge would oxygen have?

Is it easier for fluorine to gain 1 more electron or lose 7 electrons? What charge would fluorine have?

Would neon want to gain or lose electrons? What charge would neon have?

When is an atom least likely to react?

Describe one way that an element can achieve a stable electron configuration.