Examlex
Which of the following groups of terms is in the order of increasing extension?
Central Atom
The atom in a molecule or polyatomic ion that is surrounded by other atoms, forming the basis of the molecule's geometry.
Tetrahedral
Tetrahedral refers to a molecular shape where a central atom is surrounded by four other atoms at the corners of a tetrahedron.
Equivalent Atoms
Equivalent atoms are atoms in a molecule that have identical bonding arrangements and environment, making them indistinguishable in chemical reactions.
Acetylene
A colorless, flammable gas used as a fuel and a building block for chemical synthesis.
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