Elements X and Y are different elements.
Elements Q and R are isotopes.
Read the information for the 4 elements shown above. Use the information to complete the sentences below:
Element X has 17 protons and 18 neutrons.
Element Y has 18 protons and 17 neutrons.
Element Q has 56 protons and 81 neutrons.
Element R has 56 protons and 82 neutrons.
Elements X and Y are ___________.
Elements Q and R are ____________.
Word Choice:
compounds, ions, mixtures, isotopes, and different elements.
choose the correct answer
1 answer