The conversation between human and AI assistant.
[|Human|] Which of the following are periodic elements: Ti, N, Pt, Fl, Zt, 1L, 2y, O, F, V, Y
[|AI|] The following are periodic elements: Ti, N, Pt, Fl, O, F, V, Y
[|Human|] 
Which of the following are periodic elements: Ti, N, Pt, Fl, Zt, 1L, 2y, O, F, V, Y