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Why does helium exist only as single atoms?
Helium exists as single atoms because it has a full outer shell of electrons (2 electrons). This stable electron configuration makes it energetically favorable for helium atoms to exist independently rather than form bonds with other atoms.
What elements exist as single atoms not bonded to other atoms?
Noble gases such as helium, neon, argon, krypton, and xenon exist as single atoms not bonded to other atoms. They are stable with a full outer electron shell, making them unreactive and existing as individual atoms in their natural state.
What is a substance that is only made up of just one atom?
An example of a substance made up of just one atom is an element like helium or neon. These elements exist as single atoms and do not chemically bond with other atoms.
Are molecules only found in compounds?
No, molecules can exist both in compounds and as individual elements. In compounds, molecules are formed when atoms chemically bond together. In the case of elements, some exist as diatomic molecules (like oxygen, O2), while others exist as single atoms (like helium, He).
What substance is made of only one atom?
An element is a pure substance that is made up of only one kind of atom.Elements that can exist as a single atom are the noble gases in Group 18 of the periodic table.
Atoms with only 2 protons are?
Helium Atoms
What makes up helium?
Helium is an element, and, as such, is made up of no chemical 'compounds'. In a chemical sense, Helium can be said to comprise only of single helium atoms, but, on a sub-atomic level, it comprises, as do all other atoms, of protons, electrons and neutrons.
What are the only element that exist in nature as isolated atoms?
Noble gases, such as helium, neon, and argon, exist in nature as isolated atoms because they have a stable electron configuration. These elements do not readily form chemical bonds with other elements.
Why helium and magnesium are both elements and not compound?
Helium and magnesium are both elements because they consist of only one type of atom. In contrast, compounds are made up of two or more different elements chemically bonded together. Helium and magnesium exist in their pure forms as single atoms without being chemically combined with other elements.
Give two examples of monotomic molecules?
A molecule is a group of atoms bonded together. Hence, a molecule is only formed by 2 or more atoms. So, it could either be diatomic or polyatomic but not mono-atomic
Which of the Following statements about helium atom in the sun and helium atom on earth false?
Both helium atoms in the sun and on Earth have the same properties, as they are identical in terms of their atomic structure and behavior. The only difference is in the environment in which they exist.
Helium atoms only need how many valence electrons to have a filled outermost energy level?
Helium atoms only need 2 valence electrons to have a filled outermost energy level because helium is in the first period of the periodic table and its outermost energy level can only hold a maximum of 2 electrons.
