Quiz - The Periodic Table and Atoms | The Periodic Table and Atoms
General Chemistry 1 - Quiz - The Periodic Table and Atoms
What is the second period in the periodic table?
Which of the following is not an element of the main group?
Main groups: the 2 groups at the extreme left and the 6 groups at the extreme right of the periodic table. Manganese (Mn) is in group 7 ⇒ it is a transition metal
Which of the following statements is incorrect?
How many atoms of hydrogen do you have in 2.0 moles of H2?
n = ⇒ number of dihydrogen atoms = x NA = 2.0 x 6.022 x 1023 atoms
⇒ number of hydrogen atoms = 2 x
What is the SI unit of molar mass?
The SI unit of molar mass M is g.mol-1
What is the mole number of 12.4 g of MgCl2 (MMg = 24.3 g.mol-1, MCl = 35.5 g.mol-1)?
mole number =
with MMgCl2 = MMg + 2 x MCl = 95.3 g.mol-1