This question has two parts.
Two students make models of two elements and label them Element X and Element Y.
Element X.
Element Y.
Part A
Which statement is true of the two elements' reactivity?
Both are chemically reactive.
Both are chemically nonreactive.
Element X is more chemically reactive than Element Y.
Element Y is more chemically reactive than Element X.
Part B
Which statement serves as evidence to support the answer to Part A?
Both models show two shells surrounding the nucleus.
Both models show ten neutrons in the nucleus.
Element X has seven electrons in its outer shell.
Element Y has an even number of protons and neutrons.
Type the answer to Part A and then Part B in the text box below.
