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ionic compound 1

Total questions: 32

Worksheet time: 34mins

Name
Class
Date
1.
What are Valence electrons?
a)
They are the electrons in the center of an atom.
b)
They are the electrons in the highest occupied energy level of an atom.
c)
They are the electrons in the lowest occupied energy level of an atom.
d)
They are the electrons of an atom.
e)
They are the imaginary energy level of an atom.
2.
The number of valence electrons largely determines the _________ of an element.
a)
physical properties
b)
the size of nucleus
c)
chemical properties
d)
the period number
e)
their color
3.
What is the highest energy level in the element of aluminum with electron configuration of 1s2 2s2 2p6 3s2 3p1 ?
a)
the highest energy level is 2
b)
the highest energy level is 3
c)
the highest energy level is 7
d)
the highest energy level is 1
e)
the highest energy level is 4
4.
For the representative elements, the number of valence electrons is equal to the ones place of the ____.
a)
Row Number
b)
Period Number
c)
Atomic Number
d)
Group number
e)
mass number
5.

What is the number of valence electrons for Krypton atom?

a)

10.0

b)

2.0

c)

8.0

d)

3.0

e)

5.0

6.

What is the number of valence electrons for Oxygen atom?

a)

6.0

b)

7.0

c)

2.0

d)

8.0

e)

3.0

7.
Electron dot structures are diagrams that show valence electrons as ______.
a)
crosses
b)
dumbells
c)
dots
d)
circles
e)
squares
8.
What are the rules of drawing a Lewis electron dot structure?
a)

Use the chemical symbol and place dots around it to represent valence electrons.

b)

Two dots maximum on each side and No more than 8 dots around the symbol.

c)

For this class: put 1 dot on each side before doubling up.

d)

Draw brackets around the symbol for ions

e)

All of them

9.
What is the Octet Rule?
a)
The Octet Rule states that in forming compounds, atoms tend to the electron configuration of a noble gas.
b)
The Octet Rule states that in forming compounds, atoms tend to the electron configuration of hydrogen gas.
c)
The Octet Rule states that in forming compounds, atoms tend to the electron configuration of oxygen gas.
d)
The Octet Rule states that in forming compounds, atoms tend to the electron configuration of nonmetals.
e)
The Octet Rule states that in forming compounds, atoms tend to the electron configuration of metals
10.
Atoms of what type of elements tend to gain electrons?
a)
noble gas elements tend to gain electrons.
b)
hard elements tend to gain electrons.
c)
nonmetal elements tend to gain electrons.
d)
all elements tend to gain electrons.
e)
metal elements tend to gain electrons.
11.
Atoms of what type of elements tend to lose electrons?
a)
noble gas elements tend to lose electrons.
b)
hard elements tend to lose electrons.
c)
nonmetal elements tend to lose electrons.
d)
all elements tend to lose electrons.
e)
metal elements tend to lose electrons.
12.
What elements are unreactive in chemical reactions due to having a full set of valence electrons?
a)
Oxygen gas
b)
Hydrogen gas
c)
Noble gas
d)
Metals
e)
Nonmetals
13.
What is a cation?
a)

It usually comes from metal.

b)

It loses electrons and gets smaller.

c)

It is an atom or a group of atoms with a positive charge.

d)

It forms cations with +1, +2, +3 charges

e)

All of them

14.
How do sodium atoms form ions?
a)

Determine the electron configuration and its valence electron(s)

b)

A sodium atom can lose one electron to achieve its octet

c)

after losing its valence electron, it converted to a sodium ion with a positive charge of 1+.

d)

It becomes Na+1

e)

All of them

15.
Cations of group ?? elements always have a positive charge of 2+ when they form ions.
a)
Group I/IA
b)
Group II/IIA
c)
Group 13/IIIA
d)
Group I4/IVA
e)
Group 17/VIIA
16.
Cations of group ?? elements always have a positive charge of 3+ when they form ions.
a)
Group I/IA
b)
Group II/IIA
c)
Group 13/IIIA
d)
Group I4/IVA
e)
Group 17/VIIA
17.
Transition metals (and some others) can form _______ cations. For example: Fe2+ and Fe3+; Cu+ and Cu2+; Pb2+ and Cr3+ ; Cr2+ and Pb4+; Sn2+ and Sn4+
a)
one type
b)
two types
c)
three types
d)
multiple types
e)
same types
18.

What is an anion?:

a)

It usually comes from nonmetal.

b)

It gains electrons and gets bigger.

c)

It is an atom or a group of atoms with a negative charge.

d)

It becomes a negative charged ion.

e)

All of them

19.
Anions of group 15 nonmetals will always have a charge of ______:
a)

5

b)

-5.0

c)

3

d)

-3.0

e)

-2.0

20.
The electron configuration for ?? atom is [He] 2s2 2p3
a)

calcium

b)

nitrogen

c)

sulfur

d)

argon

e)

chlorine

21.

What is the chemical formula for Ammonium sulphate?

(a)  

22.

What is the chemical formula for Sodium chloride?

(a)  

23.

What is the chemical formula for Aluminum phosphate?

(a)  

24.

What is the chemical name for CuOH?

(a)  

25.

What is the chemical formula for Manganese Bromide?

(a)  

26.

What is the electron dot diagram for Magnesium?

27.

What is the elctron configuration for anion N3-

(a)  

28.

Draw the electron dot diagram for anion oxide

29.

Which one of the following is most likely to be ionic compound?

a)

H₂O

b)

Na₂O

c)

CO₂

d)

SiO₂

e)

O₂

30.

Which of the following is not ionic compound?

a)

KF

b)

CaS

c)

CH₄

d)

CoO

e)

AlCl₃

31.

Which of the following choices is wrong?

a)

MgI2 magnesium iodide

b)

K2Se potassium selenide

c)

Ca2O2 calcium oxide

d)

Al2S₃ aluminum sulfide

e)

Na2SO₄ sodium sulfate

32.

Which of the following is NOT a physical property of metals?

a)

ductile

b)

malleable

c)

shiny

d)

gaseous

e)

conductor of heat & electricity

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