Multiple Choice
_____ are examples of actinides.
A) Ti and Cr
B) U and Np
C) Sm and Er
D) Kr and Xe
Correct Answer:
Verified
Correct Answer:
Verified
Q9: The systematic name of V<sub>2</sub>O<sub>5</sub>is vanadium pentoxide.
Q10: The vertical columns in the periodic table
Q11: Which of the following is a metalloid?<br>A)Boron<br>B)Lithium<br>C)Uranium<br>D)Tungsten
Q12: How many electrons are present in <sup>40</sup>Ca<sup>2+</sup>?<br>A)40<br>B)38<br>C)20<br>D)18
Q13: Potassium has two stable isotopes: <sup> 39
Q15: Elements in a periodic family tend to
Q16: The molecular formula for iron(II)bromide is _.<br>A)FeBr<sub>3</sub><br>B)FeBr<sub>2</sub><br>C)I<sub>2</sub>Br<sub>2</sub><br>D)IBr<sub>3</sub>
Q19: The chemical formula for nitrite is NO<sub>3</sub><sup>
Q22: Uranium, plutonium, and neptunium are classified as:<br>A)
Q38: CH<sub>3</sub> − O − CH<sub>3</sub> is an