Multiple Choice
Element M reacts with fluorine to form an ionic compound with the formula MF3. The M-ion has 21 electrons. Element M is ________.
A) Al
B) Cr
C) Mn
D) Fe
E) Sc
Correct Answer:
Verified
Correct Answer:
Verified
Q60: The correct name for HNO<sub>3 </sub>is _.<br>A)nitrous
Q66: Which species has 18 electrons?<br>A)"<sup>39</sup>K"<br>B)"<sup>32</sup>S<sup>2</sup><sup>-</sup>"<br>C)"<sup>35</sup>Cl"<br>D)"<sup>27</sup>Al<sup>3</sup><sup>+</sup>"<br>E)"<sup>64</sup>Cu<sup>2</sup><sup>+</sup>"
Q68: What is the molecular formula for propane?<br>A)C<sub>2</sub>H<sub>8</sub><br>B)C<sub>3</sub>H<sub>6</sub><br>C)C<sub>3</sub>H<sub>8</sub><br>D)C<sub>4</sub>H<sub>8</sub><br>E)C<sub>4</sub>H<sub>10</sub>
Q73: What is the molecular formula for octane?<br>A)C<sub>4</sub>H<sub>10</sub><br>B)C<sub>5</sub>H<sub>10</sub><br>C)C<sub>6</sub>H<sub>14</sub><br>D)C<sub>1</sub><sub>4</sub>H<sub>28</sub><br>E)C<sub>8</sub>H<sub>18</sub>
Q141: Which one of the following is not
Q165: Aluminum forms an ion with a charge
Q174: Which one of the following will occur
Q218: Aluminum reacts with a certain nonmetallic element
Q221: What is the molecular formula for butane?<br>A)C<sub>2</sub>H<sub>8</sub><br>B)C<sub>3</sub>H<sub>6</sub><br>C)C<sub>3</sub>H<sub>8</sub><br>D)C<sub>4</sub>H<sub>8</sub><br>E)C<sub>4</sub>H<sub>10</sub>
Q246: Which pair of elements is most apt