5 Questions
An ion is a positively or negatively charged atom (or group of atoms) which is formed by loss or gain of electron(s) by an atom (or group of atoms).The number of electrons that an atom can lose, gain or share during a chemical reaction is called its valency. The valency of an element is a measure of its combining power with other elements. Monoatomic molecules - elements having only one ______ in their molecules.
atom
Noble gases (Helium, Neon, Argon, Krypton, Xenon and Radon) have one ______ each in their molecules.
atom
Diatomic molecules - elements having two ______ in their molecules, e.g. hydrogen (H₂), Oxygen (O2), Nitrogen (N₂).
atoms
Triatomic molecules - elements having three ______ in their molecules, e.g. ozone (O3).
atoms
Tetratomic molecules elements having four ______ in their molecules, e.g. phosphorus (P_{4}).
atoms
Study Notes
Ions and Valency
- An ion is a positively or negatively charged atom (or group of atoms) formed by gaining or losing electron(s).
- Valency is the number of electrons an atom can lose, gain, or share during a chemical reaction.
- Valency measures an element's combining power with other elements.
Molecules
- Monoatomic molecules: elements with only one atom in their molecules (e.g., Noble gases: He, Ne, Ar, Kr, Xe, Rn).
- Diatomic molecules: elements with two atoms in their molecules (e.g., H₂, O₂, N₂).
- Triatomic molecules: elements with three atoms in their molecules (e.g., O₃).
- Tetratomic molecules: elements with four atoms in their molecules (e.g., P₄).
Test your knowledge of chemical bonding, ions, and valency with this quiz. Explore the concepts of monoatomic molecules and the combining power of elements during chemical reactions.
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