In general terms, exothermic reactions release energy, so the energy goes from the system to the surroundings.
Answer:
Each element within a group has similar physical or chemical properties because of its atom's outermost electron shell (most chemical properties are dominated by the orbital location of the outermost electron).
Explanation:
Answer:
there are no valence electrons left over, so the molecule has four bond pairs and no lone pairs.
Explanation:
if i am correct it shall be 12. because i am thinking, 1 mole = 1 ar.
