Question

Which of the following statements is LEAST ACCURATE/FALSE (choose one):

A	A positive charge is associated with the hydrogen of a water molecule

B	If it was possible to remove one proton from a helium atom, you would end up with a hydrogen atom

C	If an ion is dissolved in water, and the oxygen atoms of the water molecule are oriented toward the ion, then the ion must have a positive charge.

D	A positive charge is associated with the oxygen of a water molecule

Answer 1

THE LEAST ACCURATE STATEMENT IS (D) : A POSITIVE CHARGE IS NOT ASSOCIATED WITH OXYGEN OF A WATER MOLECULE. BECAUSE, in a water molecule oxygen is associated with negative charge hence shows bonding with positively charged hydrogen atom.

(B): IF IT WAS POSSIBLE TO REMOVE ONE PROTON FROM HELIUM ATOM,YOU WOULD END UP WITH A HYDROGEN ATOM , IT IS NOT POSSIBLE BECAUSE, a helium atom is made of 2 protons,2 neutrons , and 2 electrons. a hydrogen atom is made of 1 proton , 0neutron and 1 electron. to convert helium into hydrogen, we need to remove not only 1 electron,but also 1 proton and 2 neutrons. removing only 1 electron will just change into a He⁺

^{(C) and (A) are correct.}