Question 1

What is the electron arrangement for potassium (atomic number 19) ?

Accepted Answer

A)  2,8,9
B)  2,8,7,2
C)  2,10,7
D)  2,8,8,1
E)  2,8,6,3F) A) and B)
G) A) and C)

Question 2

Write the electron arrangement for the atom shown.
-Phosphorus

Accepted Answer

The answer of Write the electron arrangement for the atom...

Question 3

Match between columns
                        Premises: in the third energy level of sodium
in the first electron energy level of chlorine
in the outer energy level of nitrogen
in the highest occupied electron energy level of chlorine
in the second energy level of magnesium

Accepted Answer

The Answer of five and seven and one and eight is...

Question 4

Which of the following elements is a noble gas?

Accepted Answer

A)  oxygen
B)  chlorine
C)  bromine
D)  argon
E)  nitrogenF) A) and C)
G) B) and E)

Question 5

The smallest particle of an element that retains the characteristics of the element is a(n) ________.

Accepted Answer

A)  electron
B)  neutron
C)  proton
D)  atom
E)  nucleusF) A) and E)
G) D) and E)

Question 6

Valence electrons are electrons located ________.

Accepted Answer

A)  in the outermost energy level of an atom
B)  in the nucleus of an atom
C)  in the innermost energy level of an atom
D)  throughout the atom
E)  in the first three shells of an atomF) B) and E)
G) C) and E)

Question 7

Consider a neutral atom with 30 protons and 34 neutrons.The number of electrons in this atom is ________.

Accepted Answer

A)  30
B)  32
C)  34
D)  64
E)  94F) B) and D)
G) None of the above

Question 8

Which of the following gives the correct numbers of protons,neutrons,and electrons in a neutral atom of  Sn?

Accepted Answer

A)  118 protons,50 neutrons,118 electrons
B)  118 protons,118 neutrons,50 electrons
C)  50 protons,68 neutrons,50 electrons
D)  68 protons,68 neutrons,50 electrons
E)  50 protons,50 neutrons,50 electronsF) None of the above
G) C) and D)

Question 9

Consider a neutral atom with 30 protons and 34 neutrons.The mass number for this atom is ________.

Accepted Answer

A)  30
B)  32
C)  34
D)  64
E)  94F) A) and D)
G) A) and E)

Question 10

Write the electron arrangement for the atom shown.
-Sulfur

Accepted Answer

The answer of Write the electron arrangement for the atom...

Question 11

Write the symbol from the element name.
-The symbol for mercury is ________.

Accepted Answer

The answer of Write the symbol from the element name.
-The...

Question 12

The proton has a positive charge.

Accepted Answer

A) True 
 B)False

Question 13

The atomic size of atoms ________.

Accepted Answer

A)  increases going across a period
B)  decreases going across a period
C)  decreases going down within a group
D)  does not change going across a period
E)  none of the aboveF) A) and C)
G) A) and D)

Question 14

Au is the symbol for ________.

Accepted Answer

A)  gold
B)  silver
C)  argon
D)  aluminum
E)  sodiumF) All of the above
G) B) and E)

Question 15

Match between columns
                        Premises: O,S,Se
Li,C,F
F,S,P
He,H,I
Li,Na,K

Accepted Answer

The Answer of group and period and neither is...

Question 16

Which of the following elements is a metalloid?

Accepted Answer

A)  nitrogen
B)  lithium
C)  iron
D)  gold
E)  siliconF) D) and E)
G) A) and B)

Question 17

An argon atom 18 electrons in the third energy level.

Accepted Answer

A) True 
 B)False

Question 18

In an electron-dot symbol of an element,the dots are used to represent ________.

Accepted Answer

A)  all of the electrons in the atom
B)  the valence electrons
C)  the electron arrangement
D)  only the electrons that will participate in bond formation
E)  the electrons that the element will gain when it forms a compoundF) A) and E)
G) C) and D)

Question 19

The number of electron energy levels in a magnesium atom is ________.

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) D) and E)
G) B) and C)

Question 20

gold

Accepted Answer

A)  Go
B)  Hg
C)  Ag
D)  Au
E)  AUF) B) and D)
G) A) and C)

Exam 4: Atoms and Elements

Which of the following gives the correct numbers of protons,neutrons,and electrons in a neutral atom of Sn?

Correct Answer
verified

The smallest particle of an element that retains the characteristics of the element is a(n) ________.

Correct Answer
verified

Consider a neutral atom with 30 protons and 34 neutrons.The number of electrons in this atom is ________.

Correct Answer
verified

The atomic size of atoms ________.

Correct Answer
verified

Give the correct number of electrons.

Which of the following elements is a noble gas?

Correct Answer
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Au is the symbol for ________.

Correct Answer
verified

In an electron-dot symbol of an element,the dots are used to represent ________.

Correct Answer
verified

What is the electron arrangement for potassium (atomic number 19) ?

Correct Answer
verified

Which of the following elements is a metalloid?

Correct Answer
verified

The proton has a positive charge.

Correct Answer
verified

gold

Correct Answer
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The number of electron energy levels in a magnesium atom is ________.

Correct Answer
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Write the electron arrangement for the atom shown. -Phosphorus

Correct Answer
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Valence electrons are electrons located ________.

Correct Answer
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Write the symbol from the element name. -The symbol for mercury is ________.

Correct Answer
verified

Write the electron arrangement for the atom shown. -Sulfur

Correct Answer
verified

Do the following represent elements in a group, a period, or neither?

An argon atom 18 electrons in the third energy level.

Correct Answer
verified

Consider a neutral atom with 30 protons and 34 neutrons.The mass number for this atom is ________.

Correct Answer
verified

Exam 4: Atoms and Elements

Which of the following gives the correct numbers of protons,neutrons,and electrons in a neutral atom of Sn?

Correct AnswerverifiedShow Answer

The smallest particle of an element that retains the characteristics of the element is a(n) ________.

Correct AnswerverifiedShow Answer

Consider a neutral atom with 30 protons and 34 neutrons.The number of electrons in this atom is ________.

Correct AnswerverifiedShow Answer

The atomic size of atoms ________.

Correct AnswerverifiedShow Answer

Give the correct number of electrons.

Which of the following elements is a noble gas?

Correct AnswerverifiedShow Answer

Au is the symbol for ________.

Correct AnswerverifiedShow Answer

In an electron-dot symbol of an element,the dots are used to represent ________.

Correct AnswerverifiedShow Answer

What is the electron arrangement for potassium (atomic number 19) ?

Correct AnswerverifiedShow Answer

Which of the following elements is a metalloid?

Correct AnswerverifiedShow Answer

The proton has a positive charge.

Correct AnswerverifiedShow Answer

gold

Correct AnswerverifiedShow Answer

The number of electron energy levels in a magnesium atom is ________.

Correct AnswerverifiedShow Answer

Write the electron arrangement for the atom shown. -Phosphorus

Correct AnswerverifiedShow Answer

Valence electrons are electrons located ________.

Correct AnswerverifiedShow Answer

Write the symbol from the element name. -The symbol for mercury is ________.

Correct AnswerverifiedShow Answer

Write the electron arrangement for the atom shown. -Sulfur

Correct AnswerverifiedShow Answer

Do the following represent elements in a group, a period, or neither?

An argon atom 18 electrons in the third energy level.

Correct AnswerverifiedShow Answer

Consider a neutral atom with 30 protons and 34 neutrons.The mass number for this atom is ________.

Correct AnswerverifiedShow Answer

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