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Can Elements Have Two Atoms?

Key Takeaways: Diatomic Elements Diatomic elements are pure elements that form molecules consisting of two atoms bonded together. There are seven diatomic elements: hydrogen, nitrogen, oxygen, fluorine, chlorine, iodine, bromine. These elements can exist in pure form in other arrangements.

What is it called when you have 2 elements?

When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound. Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl).

What is a diatomic molecule example?

Diatomic molecules are composed of only two atoms, of either the same or different chemical elements. Common diatomic molecules include hydrogen (H2), nitrogen (N2), oxygen (O2), and carbon monoxide (CO).

Is a period having elements from atomic number 11 to 18?

The periods are of varying lengths. First there is the hydrogen period, consisting of the two elements hydrogen, 1, and helium, 2. Then there are two periods of eight elements each: the first short period, from lithium, 3, to neon, 10; and the second short period, from sodium, 11, to argon, 18.

What is an example of a polyatomic molecule?

Molecules containing more than two atoms are termed polyatomic molecules, e.g., carbon dioxide (CO2) and water (H2O).

What must differ between the atom of two different elements?

Every atom has specific number of protons. Hence, every atom has different atomic number. Whereas if an atom is neutral then the number of electrons equals the number of protons. Therefore, we can conclude that atoms of two different elements must have different atomic numbers.

Can two elements have the same number of atoms?

Actually, two elements do have same atomic number. By virtue of which, they share the same chemical and physical properties, for which they can’t be differentiated. So, they are considered to be a single element.

How do atoms of different elements differ from each another?

The atoms of different elements are different from each other because they have different numbers of protons . The graphic below illustrates this point by showing the atoms of two elements in the containers of oxygen and hydrogen. The atoms in oxygen are identical to each other.

What are the four types of atoms?

The properties of a solid can usually be predicted from the valence and bonding preferences of its constituent atoms. Four main bonding types are discussed here: ionic, covalent, metallic, and molecular.

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