Multiple Choice
Iodine is an example of
A) a compound.
B) an element.
C) a mixture.
D) an ion.
Correct Answer:
Verified
Correct Answer:
Verified
Q2: How many electrons are in a neutral
Q101: A proton is approximately<br>A)600 times larger than
Q102: One mole of which element has the
Q103: The horizontal rows of the periodic table
Q104: What group of elements does the shaded
Q105: Na<sub>2</sub>O is named<br>A)sodium dioxide.<br>B)sodium oxide.<br>C)sodium(II)oxide.<br>D)sodium oxygen.
Q107: Elements are classified as metals,nonmetals,or semimetals.At room
Q108: In which of the following sets do
Q110: The thiosulfate ion is<br>A)HS<sup>-</sup>.<br>B)HSO<sub>4</sub><sup>2-</sup>.<br>C)SO<sub>5</sub><sup>2-</sup>.<br>D)S<sub>2</sub>O<sub>3</sub><sup>2-</sup>.
Q111: Which element has the chemical symbol,Pb?<br>A)tin<br>B)lead<br>C)mercury<br>D)potassium