True/False
Elements in a periodic family tend to combine with the same number of hydrogen atoms.
Correct Answer:
Verified
Correct Answer:
Verified
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
Q14: _ are examples of actinides.<br>A)Ti and Cr<br>B)U
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
Q45: The atomic mass of an atom is