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Periodic Table History Flashcards | StudBud
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Periodic Table History
Periodic Table History
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history of the periodic table
Flashcards
19 cards
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Practice quiz
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Questions
19
Answers
1
Halogens aren't highly reactive and can't gain an electron through reaction with other elements
True
False
2
Which of the following is not a noble gas?
Neon
Argon
Fluorine
Krypton
3
A.) How many groups/families are in the periodic table? B.) How many periods are there?
19 & 18
18 & 7
7 & 8
13 & 7
4
Do noble gases have a complete valence shell?
Yes
No
5
Alkali Earth Metals exist with what charge?
1+
2+
3-
5+
6
Which is false concerning: moving across the ionization energy increases
Decreases the atomic radius making the atom smaller
Becomes difficult to remove outermost electron
Outer electrons are closer to the nucleus
As the ionization energy increases so does the atom
7
Protons in nucleus have attraction for electrons surrounding nucleus because
neither of the given answers
both
they are positive
protons are positively charged and electrons are negative.
8
The ability of an atom of an element to attract electrons when the atom is in a compound is?
Ionization energy
Atomic Rad
Electronegativity
9
What is shielding?
inner electrons block protons attraction towards nucleus
outer electrons block protons attraction towards the nucleus
inner protons block electrons attraction towards nucleus
10
Is it common to find Alkali Earth Metals in ionic compounds or as ions?
as ions
ionic compounds
both
11
Which chemist organized the elements according to their physical properties?
Lavoisier
John Dalton
Mendeleev
Mosley
12
Do Alkali Metals become more reactive as you go down the group?
yes
no
13
Are cations (+) or (-)? Anions?
(-),(-)
(+),(-)
(+),(+)
(-),(+)
14
Energy is not needed to add or remove a valence electron during this process
Electronegativity & Ionization energy
Electronegativity trend
Ionization energy
Neither
15
What group are the Alkali Metals located in?
3
1
14
2
16
Which is false concerning the atomic radius? (AR)
Atomic radius decreases as you move across a period
Moving horizontally electrons and protons become less
AR increases moving vertically on the periodic table
Distance from atoms nucleus to outermost orbital of electron
17
Halogens have a high effective nuclear charge making them highly electronegative.
True
False
18
In what manner did Mendeleev organize the elements?
followed a repeating pattern of common physical properties
grouped elements according to increasing atomic mass
grouped metals & nonmetals according to physical properties
rearranging elements according to their increasing atomic #
19
Elements in the same group in the periodic table have similar chemical properties because...
have the same#of electrons in lowest occupied energy level
have the same#of electrons in highest occupied energy level
they are in the same period
