Aschool-age child had an upper respiratory tract infection for several days and then began having a persistent dry, hacking cough that was worse at night. the cough has become productive in the past 24 hours. this is most suggestive of

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully