S, T and U are the aqueous chlorides of the elements X, Y and Z respectively. X, Y and Z are in the same period of the periodic table. U gives a white precipitate with NaOH but this white precipitate dissolves as more NaOH is added. When NaOH is added to T, a white precipitate forms which does not dissolve when more base is added. S does not give precipitate with NaOH. Which of the following statements are correct?

S, T and U are the aqueous chlorides of the elements X, Y and Z respec

1.	S, T and U are the aqueous chlorides of the elements X, Y and Z respectively. X, Y and Z are in the same period of the periodic table. U gives a white precipitate with NaOH but this white precipitate dissolves as more NaOH is added. When NaOH is added to T, a white precipitate forms which does not dissolve when more base is added. S does not give precipitate with NaOH. Which of the following statements are correct?
Answer» The three elements are metals The electronegativity decreases fro X to Y to Z. X, Y and Z could be SODIUM, magnesium and aluminium respectively The FIRST ionization INCREASES fro X to Y to Z. Answer :A::C