GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sodium
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Lithium
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Francium
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Cerium
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Detailed explanation-1: -The correct answer is Francium. Francium is in liquid form at room temperature. Francium is a chemical element having the symbol Fr and its atomic number is 87.
Detailed explanation-2: -They are francium, cesium, gallium, and rubidium (all metals). The reason these elements are liquids has to do with how tightly bound their electrons are to the atomic nucleus. Basically, the atoms don’t share their electrons with nearby atoms, so it is easy to separate them from solids into liquids.
Detailed explanation-3: -Q. Bromine is the only element which is liquid at room temperature.
Detailed explanation-4: -There are 11 elements which are in gaseous state at room temperature. They are Hydrogen, Helium, Neon, Argon, Krypton, Xenon, Radon, Fluorine, Chlorine, nitrogen and oxygen. The list also contains Noble gases.