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प्रश्न
Polonium has the half-Life of ______.
पर्याय
13.8 days
12 days
5 days
102 days
उत्तर
Polonium has the half-Life of 13.8 days.
Explanation:
At normal temperatures, oxygen is a gas, whereas the other elements are solids. Nonmetals include oxygen and sulphur, metalloids like selenium and tellurium, and metals like polonium. Polonium has a half-life of 13.8 days and is radioactive. With increasing atomic numbers, melting and boiling points rise. All of the elements in Group 16 are allotropy.
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संबंधित प्रश्न
Explain the trend in following atomic properties of group 16 elements:
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Explain the trends in the following atomic properties of group 16 elements:
Atomic radii
Explain the trends in the following atomic properties of group 16 elements:
Ionisation enthalpy
Explain the trends in the following atomic properties of group 16 elements:
Electronegativity
Explain the trends in the following atomic properties of group 16 elements:
Electron gain enthalpy
Explain the trend in the bond dissociation enthalpies of halogen molecules. Why melting and boiling points of halogens increase on moving down the group?
Discuss the trend in the following in case of groups 16, 17 and 18 elements.
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Electron gain enthalpy
