Atomic #
The atomic number of Gallium
31
How many valence electrons does Sodium have?
1 valence electron
What is calcium's element family
Alkali earth metals
What is Carbon's atomic mass?
12 amu's
How many different elements does the periodic table have?
118
The number of electrons and protons in Platinum.
78
Valence electrons are found in this location in the atom
The outer shell
Where are the lanthanides and actinides found on the periodic table?
What is Bromine's atomic mass?
79 amu
What do the rows in the periodic table tell you?
How many shells an atom has
This element has 53 protons
Iodine
Name an element with 5 valence electrons
Vanadium, Niobium, Tantalum, Nitrogen, Phosphorus, Arsenic
What is silicon's element family?
Metalloids
How many neutrons does Chlorine have?
18 neutrons
Who organized the Periodic Table?
Dimitri Mendeleev
This element has 19 electrons
Potassium
Which families are most reactive (ready to bond with other atoms)?
Alkali metals & reactive nonmetals in group 17
How many neutrons does Lead have?
125
Where do you put dirty dishes?
In the zinc
This element has the same number of protons as the value for pH neutral.
Nitrogen (7)
The valence electrons in Fluorine are very excited because they almost have a _________ _________.
Full shell
Nobel gases have a full outer shell, which means they are
Not very reactive
Which part(s) of the atom is the heaviest
The nucleus (protons & neutrons together)
What do you do with a sick chemist?
If you can’t helium, and you can’t curium, then you might as well barium.