Question 1

What is the element with the electron configuration 1s22s22p63s23p5?

Accepted Answer

A) Be 
B) Cl 
C) F 
D) S 
E) Ar 
A) Be 
B) Cl 
C) F 
D) S 
E) Ar

Question 2

Chlorine has a higher ionization energy than aluminum.

Accepted Answer

A) True 
 B)False

Question 3

The atomic number of an atom is equal to the number of

Accepted Answer

A) nuclei. 
B) neutrons. 
C) neutrons plus protons. 
D) electrons plus protons. 
E) protons. 
A) nuclei. 
B) neutrons. 
C) neutrons plus protons. 
D) electrons plus protons. 
E) protons.

Question 4

Chlorine has a higher ionization energy than fluorine.

Accepted Answer

A) True 
 B)False

Question 5

The primary substances of which all other things are composed are

Accepted Answer

A) molecules. 
B) compounds. 
C) elements. 
D) electrons. 
E) protons. 
A) molecules. 
B) compounds. 
C) elements. 
D) electrons. 
E) protons.

Question 6

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

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 electrons 
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 electrons

Question 7

Isotopes have the same atomic number but different mass numbers.

Accepted Answer

A) True 
 B)False

Question 8

In an electron-dot structure 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 compound. 
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 compound.

Question 9

In an atom, the nucleus contains

Accepted Answer

A) an equal number of protons and electrons. 
B) all the protons and neutrons. 
C) all the protons and electrons. 
D) only neutrons. 
E) only protons. 
A) an equal number of protons and electrons. 
B) all the protons and neutrons. 
C) all the protons and electrons. 
D) only neutrons. 
E) only protons.

Question 10

Which of the following is a characteristic of the modern periodic table?

Accepted Answer

A) A group is a horizontal row on the periodic table. 
B) A period is a column on the periodic table. 
C) The elements in each group have similar chemical properties. 
D) The B groups contain the representative elements. 
E) The A groups contain the transition elements. 
A) A group is a horizontal row on the periodic table. 
B) A period is a column on the periodic table. 
C) The elements in each group have similar chemical properties. 
D) The B groups contain the representative elements. 
E) The A groups contain the transition elements.

Question 11

Which of the following elements is a nonmetal?

Accepted Answer

A) nitrogen 
B) sodium 
C) iron 
D) silver 
E) calcium 
A) nitrogen 
B) sodium 
C) iron 
D) silver 
E) calcium

Question 12

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) 94. 
A) 30. 
B) 32. 
C) 34. 
D) 64. 
E) 94.

Question 13

Which of the following is NOT true for the atoms 13N, 14N, and 15N?

Accepted Answer

A) They all have the same mass number. 
B) They are isotopes. 
C) They all have the same atomic number. 
D) They all have 7 protons. 
E) They all have 7 electrons. 
A) They all have the same mass number. 
B) They are isotopes. 
C) They all have the same atomic number. 
D) They all have 7 protons. 
E) They all have 7 electrons.

Question 14

Ca is the symbol for

Accepted Answer

A) calcium. 
B) carbon. 
C) cobalt. 
D) copper. 
E) cadmium. 
A) calcium. 
B) carbon. 
C) cobalt. 
D) copper. 
E) cadmium.

Question 15

Given the following:   Which are isotopes of each other?

Accepted Answer

A)   are isotopes of each other. 
B)  are isotopes of each other. 
C)   are isotopes of each other. 
D) None are isotopes of each other. 
A)   are isotopes of each other. 
B)  are isotopes of each other. 
C)   are isotopes of each other. 
D) None are isotopes of each other.

Question 16

iron

Accepted Answer

A) Ir 
B) Fs 
C) Fe 
D) In 
E) FE 
A) Ir 
B) Fs 
C) Fe 
D) In 
E) FE

Question 17

Write in the electronic configuration for the atom shown.
-Chlorine

Accepted Answer

The answer of Write in the electronic configuration for the...

Question 18

The maximum number of electrons that may occupy the third energy level is

Accepted Answer

A) 2. 
B) 8. 
C) 10. 
D) 18. 
E) 32. 
A) 2. 
B) 8. 
C) 10. 
D) 18. 
E) 32.

Question 19

What is the mass number of an atom of potassium that has 20 neutrons?

Accepted Answer

A) 15 
B) 19 
C) 35 
D) 39 
E) 59 
A) 15 
B) 19 
C) 35 
D) 39 
E) 59

Question 20

Au is the symbol for

Accepted Answer

A) gold. 
B) silver. 
C) argon. 
D) aluminum. 
E) sodium. 
A) gold. 
B) silver. 
C) argon. 
D) aluminum. 
E) sodium.

Exam 4: Atoms

What is the element with the electron configuration 1s22s22p63s23p5?

Chlorine has a higher ionization energy than aluminum.

The atomic number of an atom is equal to the number of

Chlorine has a higher ionization energy than fluorine.

The primary substances of which all other things are composed are

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

Isotopes have the same atomic number but different mass numbers.

In an electron-dot structure of an element, the dots are used to represent

In an atom, the nucleus contains

Which of the following is a characteristic of the modern periodic table?

Which of the following elements is a nonmetal?

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

Which of the following is NOT true for the atoms 13N, 14N, and 15N?

Ca is the symbol for

Given the following: Which are isotopes of each other?

iron

Write in the electronic configuration for the atom shown. -Chlorine

The maximum number of electrons that may occupy the third energy level is

What is the mass number of an atom of potassium that has 20 neutrons?

Au is the symbol for

Chemistry in Our Lives

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Filters

What is the element with the electron configuration 1s²2s²2p⁶3s²3p⁵?

Which of the following is NOT true for the atoms ¹³N, ¹⁴N, and ¹⁵N?