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Chapter 7H Periodic Properties Flashcards | StudBud
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Chapter 7H Periodic Properties
Chapter 7H Periodic Properties
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Predicting periodic properties of elements on the periodic table
Flashcards
15 cards
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Questions
15
Answers
1
Which element has the most metallic character?
Na
S
Al
Cl
2
Why is Li less reactive in water than Cs?
Stronger Zeff
Weaker Zeff
More shielding
Larger radius
3
The effective nuclear charge in an atom is primarily based on the number of what?
Protons
Neutrons
Electrons
All of the above
4
Why does ionization energy increase across a period?
All of the above
Stronger effective nuclear charge
Higher principal quantum number
More shielding
5
Select the product of the reaction between K (s) and O
2
(g).
K2O
KOH
KO
KO2
6
Which element has the largest atomic radius?
F
Ba
H
Sn
7
Which element has a positive electron affinity?
Rb
Ar
Cl
Mg
8
Which has the lowest melting temperature?
Cl2
Na
Al
Cs
9
What happens to ionization energy as you go down a group?
Decreases
Stays the same
Increases
Cannot be determined
10
Which ionization energy value is smallest for most elements?
IE2
IE3
IE4
IE1
11
How did Dmitri Mendeleev organize elements on the periodic table?
By atomic number
By number of core electrons
By number of valence electrons
By atomic weight
12
What is the product of the reaction between Na
2
O (s) and H
2
O(l)?
Na(OH)2
NaOH
Na2OH
HNO3
13
Which element has the smallest atomic radius?
Cl
Al
P
Rb
14
What is the product of the reaction between a metal oxide and water?
Acid
Salt
Metal hydroxide
Cannot be determined
15
Which electrons are responsible for shielding?
s- and p-orbital electrons
Core Electrons
Valence Electrons
All electrons in the atom
