GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Metals
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Gases
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Metalloids
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Non Metals
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Detailed explanation-1: -Detailed Solution. The correct answer is Gases.
Detailed explanation-2: -Answer: Option (D) Gases. Explanation: In Periodic table, various existing Chemical Elements are broadly categorized as Metals, Non-metals and Metalloids, based upon their properties.
Detailed explanation-3: -Elements that exist as gases are mainly found in the upper right corner and on the right side of the periodic table. The following elements exist as gases: H, He, N, O, F, Ne, Cl, Ar, Kr, Xe, and Rn.
Detailed explanation-4: -Elemental hydrogen (H, element 1), nitrogen (N, element 7), oxygen (O, element 8), fluorine (F, element 9), and chlorine (Cl, element 17) are all gases at room temperature, and are found as diatomic molecules (H2, N2, O2, F2, Cl2).
Detailed explanation-5: -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.