Of the elements fe li te u and he which are considered group b elements

What kind of ion is contained in salts that produce an acidic solution? a positive ion that attracts a proton from water a positive ion that releases a proton to water a negative ion that attracts a proton from water a negative ion that releases a proton to water

What effect might melting sea ice have for people who live in coastal areas?

Which metal exist in liquid state and can be cut with knife ?