Why is iodine a solid at room temperature but chlorine is a gas
Answers
Answer:
Iodine is a solid at room temperature but chlorine is a gas because the properties of the elements change from non-metallic to metallic from the top to the bottom of the periodic table, together with the decrease of the elctronegativity.
Answer:
Iodine and chlorine, both are divalent molecules.
Explanation:
Iodine is present in solid form at room temperature while chlorine is a gas at room temperature because of the difference in intermolecular forces that act on between individual molecules.
Iodine has atomic number 53 while chlorine has 17, so iodine has more electrons in its electron shells. Electrons per molecule is more in iodine than chlorine that leads to weak intermolecular forces to act on between individual molecules and so iodine has weak intermolecular forces.
Along with weak intermolecular forces, iodine molecules require more heat energy to break these intermolecular forces and so iodine is present in solid state at room temperature.
Whereas chlorine has high intermolecular forces and are present in gas form.
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