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Helium is a chemical element with symbol He and atomic number 2. It is a colourless, odorless, tasteless, non-toxic, inert, mono-atomic gas that heads the noble gas group in the periodic table. Its boiling and melting points are the lowest among the elements and it exists only as a gas except in extreme conditions.
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What element has 2 protons 1 neutron and 2 electrons?
Helium has 2 protons, 2 neutrons and 2 electrons. The symbol for helium is He and the atomic number is 2.
What element is nonreactive but only has 2 valence electrons?
The element that fits this description is helium. Helium is a noble gas with a full outer shell of 2 electrons, making it stable and nonreactive under normal conditions.
What are common compounds for helium?
Common compounds for helium include helium-3 (He-3) and helium-4 (He-4), which are isotopes of helium. Helium is typically chemically inert and does not readily form compounds with other elements under normal conditions.
What is the element name for He?
The element name for He is Helium. It is a colorless, odorless, and tasteless gas that is the second lightest and second most abundant element in the universe.
What is the atomic sign for helium on the periodic table?
The atomic symbol for helium on the periodic table is He.
Uses of helium and its description?
Nathan
What are some description of helium?
hot air ballon
What is a good description for helium?
Helium is a colourless, odourless gas. It belongs to group 18 and is chemically inert.
What element has 2 protons 1 neutron and 2 electrons?
Helium has 2 protons, 2 neutrons and 2 electrons. The symbol for helium is He and the atomic number is 2.
What a description for helium?
helium is noble gas has atomic number is 2. it don't react with any other element because outer most shell is complete.
What element is nonreactive but only has 2 valence electrons?
The element that fits this description is helium. Helium is a noble gas with a full outer shell of 2 electrons, making it stable and nonreactive under normal conditions.
What is the heliums description?
Helium is a noble gas, it is colourless, odourless gas at STP. It is a chemically inert element.
What is the description Of Saturn's surface?
The planet Saturn does not have a solid surface. Saturn is almost entirely made up of gases, hydrogen and helium.
What is a description of alpha particle?
An alpha particle is the same as a helium nucleus. It contains 2 neutrons and 2 protons. It has no electrons, so it is not an atom.
What is a description for helium?
Helium is a colorless, odorless, and tasteless gas that is the second lightest and second most abundant element in the universe. It is known for its low density and non-reactive properties, making it commonly used in applications like filling balloons or as a coolant in cryogenics.
What is a description of a balloon?
A thin rubber felxible bag, narrow at one end. Blown up with air or helium. Typically used at parties and festivals.
What is the abbreviation for helium?
He - Helium
