Question

13. 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?


A. Q, R, X, and Z are nonmetals.

B. Q, R, X, and Z are metals.

C. Q and Z are both nonmetals.

D. R and Z are both metals.

Answer 1

Marla has four cards labeled Q, R, X, and Z to represent four different elements: nitrogen, calcium, germanium, and bromine, and Q and Z are both nonmetals. Option C is correct regarding the elements.

What is the atomic constitution?

The atom contains electrons, protons, and neutrons, and the electrons revolve outside on their orbits while the proton and neutron are present in the center. The proton and electron numbers are the same in the neutral atom, so from the proton number, the atomic number of the element can be determined. Here, Q (nitrogen) and Z (bromine) are nonmetals, the R (calcium) is a metal, and the X (germanium) is a metalloid.

Hence, Option C is correct regarding the elements, as Q and Z are both nonmetals.

Learn more about the atomic constitution here.

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