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Chemistry

The Periodic Table

QuestionAnswer
Who made the periodic table? Dimtri Mendeleev
Why was the table periodic? The elements' properties repeated in a pattern
After Moseley corrected Mendeleev's ideas, the periodic table was in order of increasing atomic _________ henceforth. number
When Mendeleev created the periodic table, he believed that it was in order of increasing atomic _________. mass
What happened to Moseley later after he corrected the periodic table? He died in World War I
Atomic number + neutrons = ????? Mass number
Why is the atom neutral? Protons and electons are equal and their opposite charges cancel out.
The atomic number defines an ______. Element
What is an ionization energy? The energy required to remove an electron from a gaseous atom
What is an electronegativity? the tendency of an atom to attract electrons to itself when it is chemically combined with another element.
Where are the metals in the Periodic table? Left side of the staircase of the Periodic Table
Where are the nonmetals in the Periodic Table? Right side of the staircase on the Periodic Table
Where are the metalloids in the Periodic table? On the staircase of the Periodic Table
What happens to the atomic radius if the size goes down a group? It increases
What happens to the atomic radius if the size is on the period, from left to right? It decreases
happens to the ionization energy if the size goes down the group? It decreases
What happens to the ionization energy if the size is on the period, from left to right? It increases
Which type of elements gain electrons to become stable? Nonmetals
Which type of elements lose electrons to become stable? Metals
What happens to the electronegativity, if the size goes down a group? It decreases
What happens to the electronegativity, if the size is on a group, from left to right? it increases
Where are the lanthides & actinides, in the Periodic Table? In Period 6-7 "f" block
Where are the transition metals on the periodic table? In Group 3-12
Created by: U0105006