This is the smallest unit of an element that retains its properties.
what is an atom
what do we call an element that is malleable
what is a metal
As you go left to right, atomic size generally does this
what is decrease.
This is the center of an atom containing protons and neutrons.
What is the neutron
Elements that consist of both metals and nonmetals
This trend measures how strongly an atom attracts electrons.
What is electronegativity?
what is subtract the atomic number from the atomic mass.
This element is in group 1 and chemical symbol is K.
What is Potassium
Elements on the left side tend to do this with electrons.
What is lose electrons?
this must happen for an ion to form
what is gain or lose an electron
The chemical name for this symbol is Lb
What is lead
These are unreactive and found in group 18
As you go down a group, atomic size does this.
What is increases?
In a neutral atom, the number of protons equal this subatomic particle.
what is electron
column and rows are called what
what is groups and periods.
This can tell the weight of an atom
what is the atomic mass
This element is liquid at room temperature and is a metal.
what is mercury
This scientist is credited with creating the first widely accepted periodic table.
Who is Dmitri Mendeleev?