Periodic History s,p,d,f-block party That Trendy Periodic Table Elemental Cliques Potpourri

This century saw a “Revolution” in the discovery of new elements

The 19 th Century

This Englishman discovered that positive nuclear charge increases with increasing mass

Henry Moseley

The name for the time between, regular recurring events

A period

This German published a table with elements arranged by increasing mass

Meyer

In 1790, he compiled a list of the 23 then- known elements

Lavoisier

This block contains the fewest total elements

s

It has 3 values for m l

p-block

These elements are contained in the f-block

Inner- transition metals

Elements in this block have an l quantum number value of 2

d-block

You will find the highest I 1 values here

p-block

The trend by which the periodic table is arranged

Increasing atomic number

The most electronegative element

Fluorine

The group where the most metallic elements are found

1

For a given atom, it’s the difference between atomic number and shielding

Z eff

The definition of electronegativity

The measure of the desire of an atom for electrons in a bond

These are too “royal” to react

Noble Gases

They insulate and usually form anions

Nonmetals

Bromine’s family name

Halogens

This d-blocker is its own clique: it’s not found on Earth

Technetium

The family of elements in this clique: ns 2

The alkaline Earth metals

Lavoisier’s first name

Antoine

The prior-noble gas electron configuration of titanium (Ti)

[Ar]4s 2 3d 2

The two products when Na is put in H 2 O

NaOH (aq) and H 2 (g)

The most reactive halogen

fluorine

Mendeleev arranged his table based on element’s reactions with this element

Oxygen