What is the chemical symbol for sodium?
S
So
Na
K
How many protons are in a nitrogen atom?
5
7
14
28
In an atom, which subatomic particles are always equal?
protons and electrons
protons and neutrons
neutrons and electrons
protons, neutrons, and electrons
How many valence electrons do the atoms of elements in group 13 have (the Boron Group)?
3
5
8
13
Which of the following elements have atoms that are more massive than chlorine?
lithium
helium
carbon
argon
Choose ALL of the alkali metals (group 1) from the list below:
lithium
copper
mercury
potassium
sodium
True or false: All elements in a family have the same number of valence electrons (except Helium and the transition metals).
True
False
How many neutrons does the most common isotope of argon have?
18
20
22
8
What is the element that has one more proton than tin (Sn)?
antimony
iodine
lead
indium
How many total electrons to xenon atoms have?
8
54
131
132
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