How many valence electrons does oxygen have?
6 valence electrons
Which of these is the correct symbol for magnesium?
MG
?
Which of these contains two carbon atoms and six hydrogen atoms?
C2h6
Does this contain four hydrogen atoms?
H202
How many atoms are there in total in a molecule of sulfur trioxide, SO3?
What charge does a proton have?
Positive
What is a valence electron?
Electrons on the outermost shell
What particles are in the nucleus of an atom?
Neutrons and protons
What is the periodic table for?
To show all the elements
Beryllium has how many protons?
4