Which groups of atoms become more stable when they loose an electron?

All of the group one elements(Na, Li, K, Rb, Cs, Fr) this is because they only have one valence electron. So, they want to lose that one valence electron to satisfy the octet rule and become more stable. Do you under stand? This is why their cations have a +1 charge (because they lose one negative charge when they lose that outer valence electrons.