Atomic Parts
Elements in the same group (with the exception of groups 3-12) have the same number of what?
Valence electrons
Name 3 characteristics of metals
Good conductors, malleable, ductile, shiny
It tells the number of protons contained inside an atom of an element.
What is the atomic number?
For an atom to be neutral, the number of protons must equal what?
The number of electrons
Name 3 characteristics of nonmetals
poor conductors, dull, brittle
What does the nucleus of an atom consist of?
protons and neutrons
The electrons with the most energy are closer or further from the nucleus?
Further
What is the Alkaline Earth Metals?
Halogens are found in what group?
17
Atoms with the same number of protons, but different number of neutrons.
What are isotopes?
Why did Mendeleev leave blank spots in his periodic table?
He believed there were still more elements to be discovered that would fit in the missing spots.
Helium and most nonmetals are found where on the periodic table?
Information that is contained within a square on the Periodic Table.
What are atomic number, element symbol, element name, and atomic mass?
What is the maximum number of valence electrons in the second shell of an atom?
8
The energy levels, or shells, of an atom are occupied by ________________.
electrons
From its location on the periodic table, you can predict an element's ______________.
properties
The group of elements that share characteristics of both metals and nonmetals.
Metalloids
Credited with developing the first Periodic Table of the Elements, he arranged the elements in order of increasing atomic mass.
Who is Dmitri Mendeleev?
The elements in a column on the periodic table are in the same ___________.
family