Periodic Table Answers
Which statements accurately describe Dmitri Mendeleev’s contributions to the development of the periodic table? Check all that apply.Mendeleev wrote the first modern chemistry textbook.Mendeleev produced the first orderly arrangement of known elements.Mendeleev ordered the elements by increasing atomic number.Mendeleev used patterns to predict undiscovered elements.Mendeleev accounted for variations resulting from isotopes.
[___]
13
Atoms of elements in the same group have the same number of [___]. This is why they have similar chemical properties.
How many protons are in an atom of tin?
[___]
50
[___]
69
[___]
110
[___]
133
Which scientist arranged the elements in order of increasing atomic number, rather than increasing atomic mass?
[___]
3
Which statement accurately compares the trends in atomic number and atomic mass in the periodic table?
[___]
50
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