The answer will be (4) HI because the greater the difference of the bonds in electronegativity, the more polar a bond is.
Actually, that does not happen until the protostar becomes a star when nuclear ignition starts and is maintained. It takes awhile for new star to go through its T-Tauri stage and settle down on the main sequence.
<span>A STAR does not reach hydrostatic equilibrium until it on the main sequence. Otherwise, it would remain a brown dwarf with not enough mass to to maintain nuclear fusion for more than 3,000 to 10,00 years. </span>
I love these type of questions :)
Final Answer: Neon
Answer is d. in hetrogeneous you can separate things from each other
