Question
Henry Moseley studied x-ray spectra of several elements in a row of the Periodic Table. He found that each element had one more proton than the element immediately to its left.
Which statement best describes Moseley's contribution to the modern Periodic Table?
A
Recognizing that elements in the Periodic Table have similar properties
B
Grouping elements in the Periodic Table based on their physical properties
C
Predicting the properties of missing elements in the Periodic Table
D
Providing a basis for ordering elements in the Periodic Table
Which statement best describes Moseley's contribution to the modern Periodic Table?
A
Recognizing that elements in the Periodic Table have similar properties
B
Grouping elements in the Periodic Table based on their physical properties
C
Predicting the properties of missing elements in the Periodic Table
D
Providing a basis for ordering elements in the Periodic Table
Answers
GPT-4o mini
The statement that best describes Henry Moseley's contribution to the modern Periodic Table is:
**D: Providing a basis for ordering elements in the Periodic Table.**
Moseley's work established that the atomic number (the number of protons) is the fundamental property that determines the order of elements in the Periodic Table, rather than atomic mass, as was previously thought. This corrected the order of elements and laid the foundation for the modern understanding of the Periodic Table.
**D: Providing a basis for ordering elements in the Periodic Table.**
Moseley's work established that the atomic number (the number of protons) is the fundamental property that determines the order of elements in the Periodic Table, rather than atomic mass, as was previously thought. This corrected the order of elements and laid the foundation for the modern understanding of the Periodic Table.