Which of the following is an element water oxygen carbon dioxide ammonia

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

What is the binding energy of a nucleus that has a mass defect of 5.81*10-^29 kg a 5.23*10-^12 j b 3.15* 10^12 j c 1.57*10-3 j d 9.44*10^20 j

Is 343 in the sequence -5, -2, 1, 4, 7