Question 1

Group 7A elements are also called:

Accepted Answer

A)  noble gases.
B)  halogens.
C)  alkaline earth metals.
D)  alkali metals.
E)  none of the above

Question 2

Metalloids are located where on the periodic table?

Accepted Answer

A)  left side
B)  right side
C)  middle
D)  zig-zag diagonal line
E)  none of the above

Question 3

Which of the following elements has only 12 protons?

Accepted Answer

A)  C
B)  Zn
C)  Mg
D)  O
E)  none of the above

Question 4

Group 1A elements are also called:

Accepted Answer

A)  noble gases.
B)  halogens.
C)  alkaline earth metals.
D)  alkali metals.
E)  none of the above

Question 5

A fictional element named Nivadium is found to have three naturally occurring isotopes with the natural abundances shown here: 
The calculated atomic mass of Nivadium is

Accepted Answer

A)  7.61 amu
B)  22.83 amu
C)  23.18 amu
D)  69.55 amu
E)  none of the above

Question 6

Which of the statements about the discovery of electrons is FALSE?

Accepted Answer

A)  Because atoms are neutral,the existence of a negatively charged particle implied there must be a positively charged component of an atom.
B)  Thomson proposed that electrons were small particles held within a positively charged sphere.
C)  Rutherford proved the plum-pudding model correct.
D)  The negatively charged electron is located outside the nucleus.
E)  All of the above statements are true.

Exam 4: Atoms and Elements

Which of the following elements has only 12 protons?

Correct Answer
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Metalloids are located where on the periodic table?

Correct Answer
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Group 7A elements are also called:

Correct Answer
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Group 1A elements are also called:

Correct Answer
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Which of the statements about the discovery of electrons is FALSE?

Correct Answer
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A fictional element named Nivadium is found to have three naturally occurring isotopes with the natural abundances shown here: The calculated atomic mass of Nivadium is

Correct Answer
verified

Exam 4: Atoms and Elements

Which of the following elements has only 12 protons?

Correct AnswerverifiedShow Answer

Metalloids are located where on the periodic table?

Correct AnswerverifiedShow Answer

Group 7A elements are also called:

Correct AnswerverifiedShow Answer

Group 1A elements are also called:

Correct AnswerverifiedShow Answer

Which of the statements about the discovery of electrons is FALSE?

Correct AnswerverifiedShow Answer

A fictional element named Nivadium is found to have three naturally occurring isotopes with the natural abundances shown here: The calculated atomic mass of Nivadium is

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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