I think the correct answer is c
The mass is made up of protons and neutrons, the valence electrons only determine stability, not mass
1 - They all are solids due to the strong electrostatic force
<span>2 - They also have high m.p and b.p. </span>
<span>3 - It conduct electricity in molten state or in aqueous solutions </span>
The flight or fight hormone, adrenaline