Question

the search is now on for element with atomic number 119. based on periodic trends, which of the following would most likely be true of this element?
a. it would be a nonmetal.
b. it would be placed into period 7.
c. it would have a full valence shell of electrons.
d. it would most likely form cations when it reacts.
question 14 of 15

Explanation:

1. The current periodic table has 118 elements, with period 7 complete. Element 119 would start a new period (period 8), so B is incorrect.
2. Non - metals are located on the right - hand side of the periodic table. New elements are likely to be metals, so A is incorrect.
3. A full valence shell is characteristic of noble gases. Element 119 is not a noble gas, so C is incorrect.
4. Metals tend to lose electrons and form cations in reactions. Since element 119 is likely to be a metal, it would most likely form cations when it reacts.

Answer:

D. It would most likely form cations when it reacts.