Categorizing
What is the name of the group 1 elements
alkali metals
An element that belongs in the second period and has one valence electron
Lithium
What property is made of the sum of an atoms protons and neutrons
Atomic Mass
Reactivity for nonmetals does what as you move down the periodic table
decreases
As you move from left to right of the periodic table the atomic radius...
Lanthanides
Chlorine
What physical property allows metals to be made into foil
malleability
This element is the most reactive nonmetal
fluorine
The amount of energy required to remove an electron
Ionization energy
What group is known as the inert gases
18 (Noble gases)
An element that has 5 valence electrons and is the most electronegative metalloid in it's group.
As (Arsenic)
What property best describes the noble gases?
They are generally unreactive.
What family/group on the Periodic Table is identified as the most reactive nonmetals?
Halogens/ 17
When moving from left to right electronegativity...
Increases
The family in which magnesium belongs to
Alkaline Earth Metals
The metalloid in group 13
B (Boron)
Group of silvery metals that react with water
Alkali Metals
Which alkaline earth metal is the most reactive?
Radium
Rubidium has a lower ionization energy than sodium. One reason for this is that the —
valence electrons are farther from the nucleus
The center block of the periodic table (3-12) make up which group of elements?
Transition Metals
The least electronegative element
Metals are electron donors, making positively charged ions called...
cations
J. Priestly discovered that many carbon-containing materials burn in the presence of oxygen gas. However, the rest of the elements in the carbon family do not react the same way.
What explains this phenomenon?
Reactivity decreases going down a family.
Why the ionization energy greater with lithium than it is with francium
The effective nuclear charge is lesser on francium's valence electrons, allowing electrons to be removed with less energy compared to lithium.