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Periodic Table
Periodic Table
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Questions from Unit 5 - The Periodic Table
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Questions
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Answers
1
As you move left to right across a period, what increases?
atomic radius
number of protons
2
Calcium ions differ from calcium atoms because calcium ions...
have two fewer electrons
have two extra protons
have two fewer protons
have two extra electrons
3
How many valence electrons does an element in carbon's family have?
2
4
1
3
4
What type of ion would a halogen form?
gain 1 electron, 1-
lose 2 electrons, 2+
lose 1 electron, 1+
gain 2 electrons, 2-
5
Which element is most electronegative?
Rn
Fr
H
F
6
Which group has the most reactive metals?
#2
#7
#1
#8
7
Which metal is liquid at standard temperature and pressure?
Carbon
Mercury
Iron
Potassium
8
Why was Mendeleev's periodic table revolutionary?
his table predicted undiscovered elements
his table was ordered
his table had element names
his table listed atomic mass
9
Which of these elements has the biggest atomic radius?
Cs
Rn
He
H
10
Which of these is NOT a noble gas?
Selenium
Krypton
Argon
Xenon
11
Which elements have the highest ionization energy?
elements in top right of table
elements in bottom right of table
elements in top left of table
elements in bottom left of table
12
What are the columns of the periodic table called?
order
lines
periods
families
13
Which group has the most reactive nonmetals?
column #17
column #2
column #18
column #1
14
Our modern periodic table is arranged by...
atomic mass
name (alphabetical)
atomic radius
atomic number
15
Germanium is a metalloid, therefore...
it has properties just like nonmetals
it is a transition metal
it has properties just like metals
it has properties of both metals and nonmetals
16
Which group number are the halogens found in?
17
18
15
16
17
Which of these are properties of nonmetals?
brittle, don't conduct heat/electricity well
conduct heat and electricity well
have large atomic radii
malleable, ductile
18
What are the rows of the periodic table called?
families
lines
periods
groups
19
How many valence electrons does an alkaline earth metal have?
2
3
1
4
20
Which element has 8 valence electrons?
iron
chlorine
oxygen
neon
21
Electronegativity is most affected by...
atomic name
atomic radius
atomic mass
electron mass
