Gases
An element that can oxidize other elements
Oxygen
A semimetal that has been used in history to poison and kill others.
Arsenic
Diamond's rating on the Mohs scale
10
Steel is mainly ____ alloyed with carbon, along with small amounts of other elements
Iron
The most radioactive element
Oganesson
A radioactive gas
Radon
This element has the most allotropes
Carbon
A fingernail is ___ on the Mohs scale
2.5
This metal is liquid at room temperature
Mercury
These two elements were used to make the nuclear bombs that hit Japan in WWII
Uranium and plutonium
The least reactive element
Neon
This semimetal is radioactive
Actinium
What is the element with the highest Mohs scale rating in its pure form, and what is it's Mohs scale rating
Boron at 9.3
This element is used to make cheap jewelry
Zirconium
The group of elements that are all radioactive and separate from most of the periodic table
Actinides
The number of gases on the periodic table
11
The most reactive element
Fluorine
Lead is a ___ on the Mohs scale
1.5
The hardest transition metal
Chromium at 8.5 on the Mohs scale
The radioactive elements that come before atomic number 84
Technetium and Promethium
The color of neon lights made of xenon
Blue
This nonmetal element is a liquid at room temperature.
Bromine
Graphene, the material with the most tensile strength, has a Mohs scale hardness of ___
2-3
The element that evaporates at a higher temperature than all other elements
Rhenium
The half life of Oganesson
0.69 to 0.89 seconds
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