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History of Periodic Table
Element Identification
Elemental Groups
Electron Configuration
Random
100

Who is credited for the creation of the periodic table which we use today?

Dmitri Mendeleev

100
What is the name of element number 106 and what is the atomic number?
Seaborgium, 106.
100

What are the family names of the group that is the most reactive metals on the periodic table of elements?

Alkali Metals

100
What does the term "valence" mean?
Outermost
100

The mass number of an element shows __.

What is protons and neutrons?

200

Dmitri Mendeleev classified elements according to their atomic __________?

mass

200

What element has an average atomic mass of 238.

U, Uranium

200

Which family of elements is the most reactive non-metals?

halogens

200

2,6 is the electron configuration of what element?

oxygen

200

These are usually gases or brittle solids at room temperature.

What are non-metals?

300
How is the periodic table arranged today?
By atomic number.
300
What is the name of the element with the elemental symbol Zr?
Zirconium
300

The elements boron (B), aluminum (Al), gallium (Ga), indium (In), and thallium (Ti), belong in which elemental family?

Boron Group

300

What is the electron configuration of Neon?

2,8

300

This metal is a liquid at 00C.

What is mercury (Hg)?

400

By 1860's, this many elements were discovered and needed to be organized?

63

400
Which element has 42 as its atomic number?
Mo, Molybdenum
400
Which elements belong in the Carbon Group?
Carbon (C), Silicon (Si), Germanium (G), Tin (Sn), and Lead (Pb)
400

What is the electron configuration of sodium?

2,8,1

400

Elements that have both properties of nonmetals and metals.

What are metalloids?

500

Name the elements that Mendeleev's periodic table had predicted.

gallium, scandium, germanium

500

What is the elemental symbol for tin?

Sn

500

Name the family which contains the elements: Nitrogen (N), Phosphorus (P), Arsenic (As), Antimony (Sb), and Bismuth (Bi)

Nitrogen family or pnictogens  (15)

500
What does the electron configuration of an element reveal about that element?
How the electrons are arranged in an atom.
500

This nonmetal is a liquid at room temperature

What is bromine (Br)?