9. This is the only element in the d-block (the middle area of the periodic table) that has not been isolated from the Earth's crust. It derives its name from the fact that it had to be
synthesized by technical means...

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

Which of the following is most likely true about water in chemical solutions?

If two identical atoms are bonded,what kind of molecule is formed