Periodic Table
What is the name of the rows and columns on the periodic table?
Rows = Periods
Columns = Groups/Families
What is the name of the elements that border the Zig-Zag line?
The Metalloids
What is a valence electron?
Where is the smallest element located on the periodic table?
Top right of the table.
Which element has the lower electronegativity?
Na or Mg
Na
How do you find the number of valence electrons in an element?
On your periodic table, Because like a good student I wrote them down when the teacher asked!
The most nonreactive family of the periodic table.
The Noble Gases
How many electrons does an atom want to become stable? (Octet rule)
All elements want to get to 8 valence electrons to become stable.
Define ionization energy.
The energy required to remove ONE electron from an atom.
Define Atomic Radius.
The size of an atom
The distance from the center of the atom to the outermost ring.
What is the name of the family with 7 valence electron?
The Halogen Family
What is the name of the family that forms an anion with a -1 charge?
The Halogen Family
Do non-metals gain or lose electrons to become stable ions?
Non-metals gain electrons
Which atom is larger S or Po?
WHY?
Po because it has more electron shells
Across a period (left to right) electronegativity ________ (inc/dec)
Down a group electronegativity _________ (inc/dec)
Across a period electronegativity INCREASES
Down a group electronegativity DECREASES
The Periodic Table is organized based on one number. What is this number?
Atomic Number
What is the name of the family that contains the largest atom on the Periodic Table?
The Alkali Metals
Which metal is the most reactive?
Fr
Which element has the higher Ionization Energy?
WHY?
Sr or Te
Te, because it is a smaller atom meaning its electrons are close to the nucleus and tightly held onto.
Takes a lot of energy to remove an electron
List the following elements by increasing atomic radius
Fe, S, Ca, F
F, S, Fe, Ca
How many valence electrons does the element with 53 protons have?
7-It has to be bromine in group 7A
What is the name of the family that will lose 2 electrons to satisfy the octet rule? What is the charge of elements after they do this?
The Alkaline Earth Metals.
Charge = +2
A neutral atom with 38 electrons loses 2 electrons to become stable. Is it a metal or a non-metal? What is its ionic charge?
It is Strontium in group 2A. It is a metal. Its charge becomes 2+
Define electronegativity, and state the trend
The attraction to electrons, up and to the right
Except for the noble gases a smaller atom will have a _________ (higher/lower) electronegativity.
A small atom will have a HIGH electronegativity (if its not a noble gas).