Which element will have the same valence electron structure as nitrogen A. Aluminum (Al)
B. Antimony (Sb)
C. Lithium (Li)
D. Oxygen (O)

Ithink is a because if say increased in electronegativity

Bthats what im doing to and i figured it out it is b

The answer is neonhope it

The internal energy of the system we can term it as total potential energy and kinetic energy. energy flows out of the surrounding from the system then we can say that the internal energy of the final state is lower than its initials. the sign of  δesystem is negative.δesystem = efinal - einitial=-ve  efinal  ∠einitial.