The Only Remaining Chemical Element...

Enter the only chemical element that fits the description that has not already appeared on the quiz.

Sources: Wikipedia and periodictable.com

Inspired by cornflakesfu's series

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Last updated: July 23, 2022

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First submitted	July 23, 2022
Times taken	45
Average score	37.3%
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The only remaining chemical element...	Element
To have only three letters in its name	Tin
To have a historical "age" named after it	Iron
To have a stable isotope with no neutrons	Hydrogen
To be found in bronze	Copper
To be red in its pure form	Bromine
To be green in its pure form	Chlorine
To be a metal and not be gray in its pure form	Gold
To burn lilac in a flame test	Potassium
To be found in rust	Oxygen
To have 8 or more naturally occurring isotopes	Xenon
To have a name that starts with the letter K	Krypton
To be a liquid at room temperature	Mercury
To be found in abundance in stars	Helium
To be named after a Norse god	Thorium
To make up more than 1% of air	Nitrogen
To be lighter than air	Neon
To make up more than 0.1% of the universe	Carbon
To be a major component of stainless steel	Chromium
To be a major component of sand	Silicon
To make up more than 5% of Earth's crust	Aluminum
To be found in a light bulb's filament	Tungsten
To have been formed during the Big Bang	Lithium
To be found in brass	Zinc
To be discovered after 2007	Tennessine
To be discovered before 3000 BC	Lead
To have a half life shorter than 100 milliseconds	Oganesson
To not react with anything	Argon
To be a noble gas	Radon
To be found in DNA	Phosphorus
To be found in protein	Sulfur
To be found in Pepto-Bismol	Bismuth
To have an Olympic medal made from it	Silver
To be in group 11	Roentgenium
To be named after a US state	Californium
To have a melting point greater than 5,500 °C	Rhenium
To be a gas	Fluorine
To be diatomic	Iodine
To be a halogen	Astatine
To be more electronegative than gold (2.54)	Selenium
To be radioactive but occur naturally in non-trace amounts	Uranium
To have a name that starts with Z	Zirconium
To be stronger than stainless steel (specific strength 63.1 kN·m/kg)	Titanium
To be found in table salt	Sodium
To have formerly had a different symbol for over 50 years	Niobium
To be widely used in nuclear weapons	Plutonium
To be named after two different people	Curium
To be named after a (non-mythological) woman	Meitnerium
To come after gold in the reactivity series of metals	Platinum
To be used in a currently circulating US coin	Nickel
To be harder than topaz in its pure form (Mohs hardness 8)	Boron
To be found in the strongest type of commercially available magnets	Neodymium
To have only two electron shells	Beryllium
To be found in emeralds	Vanadium
To have a half life shorter than one minute	Livermorium
To form compounds with an oxidation state of +9	Iridium
To be found in chalk	Calcium
To be named after a university	Berkelium
To be named after a location in the Western Hemisphere	Americium
To be found in the cathode of a lithium-ion battery	Cobalt
To be magnetic in its pure form at 20 °C	Gadolinium
To have an atomic number that is a power of two	Germanium
To be named after a continent	Europium
To have an ISO currency code (e.g. USD or EUR)	Palladium
To have its symbol not be derived from its English name	Antimony
To have been discovered in antiquity	Arsenic
To have a name that doesn't end in -um	Manganese
To have an atomic mass less than 40	Magnesium
To have a name that starts with G	Gallium
To melt when placed in one's hand	Cesium
To not be a metal	Tellurium
To have multiple allotropes	Polonium
To have been discovered by Marie Curie	Radium
To be radioluminescent	Promethium
To be in period 4	Scandium
To be a rare earth metal, but not a lanthanide or an actinide	Yttrium
To be named after another element	Protactinium
To be radioactive, despite being surrounded by stable elements	Technetium
To have a name that starts with Y	Ytterbium
To be considered an essential element for human survival	Molybdenum
To be considered a refractory metal	Tantalum
To have a name that doesn't end in -ium	Lanthanum
To be named after someone born in Germany	Einsteinium
To have a boiling point greater than 5000 °C	Osmium
To be in group 5	Dubnium
To be named after a city in Russia	Moscovium
To have a row named after itself on the period table	Actinium
To have not had an official name until 2016	Nihonium
To be named after a person born in Asia	Mendelevium
To be named after a place in Asia	Indium
To be named after a place in Eastern Europe	Ruthenium
To be part of the platinum group of metals	Rhodium
To be named after a Russian	Flerovium
To have a name that starts with a vowel	Erbium
To be named after Ytterby, Sweden	Terbium
To be more dense than gold	Neptunium
To be named after a Slav	Copernicium
To naturally occur in trace amounts, despite being radioactive	Francium
To be named after a place in Sweden	Holmium
To be an alkali metal	Rubidium
To be named after a person that did not receive a Nobel Prize	Nobelium
To be known for its toxicity	Thallium
To have an atomic number that is a perfect square	Fermium
To be an actinide	Lawrencium
To be named after a place in France	Lutetium
To have an atomic mass less than 100	Strontium
To react with water	Barium
To have a vowel in its symbol	Cerium
To have been known to Mendeleev when he invented the periodic table	Cadmium
To be named after a current national capital	Hafnium
To be named after a place in Scandinavia	Thulium
To have a name that is more than 12 letters long	Rutherfordium
To be named after an American	Seaborgium
To be directly named after a person	Bohrium
To be indirectly named after a person	Samarium
To have an odd atomic number	Praseodymium
To have any stable isotopes	Dysprosium
To have a half life longer than an hour	Hassium
To be on the periodic table	Darmstadtium

Level 61

Jan 27, 2024

Oh wow that has a hard quiz. Super fun challenge though! I definitely resorted to guessing on some (okay lots) of them, but it was a fun puzzle to solve! :)

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