Periodic Trends
As atomic number increases, the electronegativity increases since the elements are getting closer to an octet.
How does electronegativity vary within a group on the periodic table?
A cation is ________.
What is a positive ion?
Argon, Krypton, and xenon are ________ _______.
What are Noble gases?
A horizontal row in which all the elements in that row have valence electrons in the same energy level.
What is a period of elements on the periodic table?
Nitrogen's electron configuration is 1s1 2s2 2p3. To what group does nitrogen belong?
What is Group 15/Nitrogen?
Which group of elements would have the highest ionization energy?
What is noble gases?
An anion _________.
What is a negative ion?
The elements whose electron configurations end with s2 p5 in the highest occupied energy level belong to Group __.
What is Group 17?
Dmitri Mendeleev.
Who is credited with the first periodic table?
The elements whose electron configurations end with s2 p5 in the highest occupied energy level belong to Group __.
What is Group 17/Halogens?
As you move left to right in period 4 from potassium through bromine, ionization energy _________ __________.
What is increases?
the energy needed to remove an electron from an atom.
What is ionization energy?
The most reactive group of the nonmetals is the _________.
What is halogens?
In groups of elements with similar properties in which fell into vertical columns.
How was Dmitri Mendeleev's periodic table arranged?
The electron configuration of aluminum, atomic number 13, is Ne 3s2 3p1. Aluminum is in period?
What is period 3?
Across a period in the periodic table, atomic radii ________.
What is decreases?
an arbitrary scale indicating an element’s attraction for a shared pair of electrons.
What is electronegativity?
Family name of aluminum.
What is group 13/Boron?
Period of neon in the periodic table.
What is period 2?
The element that has the greatest electronegativity is________.
What is Fluorine?
Which way does electronegativity go on the periodic table?
As you move down a group on the periodic table, the electronegativity of an element decreases. It also increases as you move from left to right.
is removed when the ionization energy is supplied to an atom of an element.
What is an electron?
Group name of magnesium.
What is Group 2/Alkaline earth metals?
As atomic number increases, the ionization energy decreases since the shielding effect is increases resulting in the outer electrons being held less tightly.
How does ionization energy vary within a group on the periodic table?
Bromine, atomic number 35, belongs to Group 17. How many electrons does bromine have in its outermost energy level?
What is seven?