In 1864, the English chemist John Newlands noticed that when the elements were arranged in order of increasing atomic mass, every eighth element had similar properties. Newlands referred to this relationship as the
A) law of periodicity.
B) law of loopholes.
C) law of octaves.
D) law of orbitals.
E) law of proportionality.
Correct Answer:
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Q1: What is the electron configuration for Fr?
A)
Q2: Who found that the atomic number was
Q4: In what groups are transition metals located?
A)
Q5: Which of these elements exhibits chemical behavior
Q6: Which element would be expected to have
Q7: The nineteenth century chemists arranged elements in
Q8: Which element would be expected to have
Q9: The chief contribution of physicist Henry Moseley
Q10: Which two electron configurations represent elements that
Q11: Which element would be expected to have
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