Marla has 4 cards labeled Q, R, X, and Z to represent four different elements. She knows the number of protons for each element but not the element's identity. The table shows the number of protons for each different element.
What can be concluded about the elements represented by Marla's cards?
Responses
Q, R, X, and Z are nonmetals.
Q, R, X, and Z are nonmetals.
Q, R, X, and Z are metals.
Q, R, X, and Z are metals.
Q and Z are both nonmetals.
Q and Z are both nonmetals.
R and Z are both metals.
