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Unit 5 Periodic Table HC Flashcards | StudBud
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Unit 5 Periodic Table HC
Unit 5 Periodic Table HC
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1
The
period
trend for atomic radii is to _______ due to the increase in __________.
decrease; an increase in electronegativity
increase; coulombic attraction
decrease; shielding
decrease; coulombic attraction
2
The smaller an atom the ________ to remove an electron because coulombic attraction ________.
easier, decreases
easier, increases
harder, decreases
harder, increases
3
Elements in group 5 _____ _______ electrons when bonding to be stable
lose 5
gain 3
lose 3
gain 5
4
Electronegativity is..
A measure of an atom's ability to attract electrons
A measure of an atom's ability to attract neutrons
A measure of an atom's ability to attract protons
A measure of how negative electrons are
5
Ionization energy ________ down a group due to a(n) _______coulombic attraction
increases; decrease
decrease; increase
decreases; decrease
increases; increase
6
The metals with the weakest attraction (lowest electronegativity) to valence electrons
metalloids
group 2A
group 1A
tranisition metals
7
Elements in group 2 _____ _______ electrons when bonding to be stable
lose 6
lose 2
gain 2
gain 6
8
Group of metals stored in oils or kerosene due to HIGH water reactivity
alkali metals
rare earth metals
alkaline earth metals
transition metals
9
The metals that are least reactive that form colored compounds
alkaline earth metals
alkali metals
transition metals
aluminum group
10
Coulombic Attraction is greatest when
Distance between charged particles is big and charges are big
Distance between charged particles is big and charges are small
Distance between charged particles is small and charges are big
Distance between charged particles is small and charges are small
11
Which element has the highest electronegativity?
francium
fluorine
radon
hydrogen
12
Group of metals with intermediate water reactivity with 2 valence electrons
transition metals
rare earth metals
alkaline earth metals
alkali metals
13
Medeleev arranged the periodic table by atomic mass and
physical properties
reaction with water
number of protons
chemical reactivity
14
The largest atoms are located where on the periodic table
bottom right
top left
top right
bottom left
15
The group of nonmetals that is extremely reactive
noble gases
halogen group
Alkali Metals
oxygen group
16
What did Moseley contribution to the periodic table?
discovered elements differed by # of neutrons, led to organizing by protons
Predicted missing elements in Mendeleev's Periodic table.
discovered positively charged protons
discovered elements differed by # of protons, led to organizing by protons
17
The group of nonmetals that is extremely unreactive that do not readily form compounds
halogen group
noble gases
Alkali Metals
oxygen group
18
Ionization energy is __ for large atoms because it takes __ energy to remove electrons further from the nucleus.
larger; more
larger; less
smaller; more
smaller; less
19
Elements in group 8 are stable and do not generally bond because
they have a full electron energy level
they have a full electron orbital
they don't have valence electrons
they have a full electron sublevel
20
The noble gas stable with less than an octet
boron
neon
helium
hydrogen
