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Polonium chemical properties
Polonium with the atomic number 84 is in the group 16 and period 6 of the Periodic Table of Mendeleev.
Some compounds of polonium are: PoO, PoO2, PoO3, PoH2, halides as PoX2, PoX4, PoX6 and the strange class of polonides (compounds of polonium with other metals). The Pauling electronegativity is 2. Possible valences are: 2, 4, 5, 6, -2.
Polonium physical properties
Density: alpha phase: 9,196 g/cm3; beta phase: 9,398 g/cm3
Melting point: 254 0C
Boiling point: 962 0C
Heat of fusion: 13 kJ/mol
Heat of vaporization: 102,91 kJ/mol
Molar heat capacity: 26,4 J/mol.K
Electrical resistivity: 0, 40 microohm.meter
Thermal conductivity: 20 W/m.K
Atomic radius (empirical): 168 pm
First ionization energy: 812,1 kJ/mol
Crystalline structure: alpha-phase: cubic; beta phase: rhombohedral
Magnetism: monmagnetic
Thermal expansion: 23,5 microm/m.K
Polonium is a highly radioactive metal that is silvery-gray in color. It has a melting point of 254 degrees Celsius and is a poor conductor of heat and electricity. Polonium is mainly known for its high toxicity due to its radioactivity.
Some characteristics of plutonium are: - isotopes Pu-239 and Pu-241 are fissile
- is a metal in the actinoids family
- is radioactive
- is an artificial element
- is toxic
- is paramagnetic
- melting point: 639,4 0C
- boiling point: 3 228 0C
- heat of fusion: 2,82 kJ/mol
- Pauling electronegativity: 1,28
- possible valences: 2 to 7 (an exceptional situation)
- electron configuration: [Rn]5f67s2
- empirical atomic radius: 159 pm
- crystalline structure: monoclinic
- thermal conductivity: 6,74 W/m.K
- electrical resistivity: 1,46 microohm.m
- Vickers hardness: 255 - Brinell hardness: 242 - Mohs hardness: cca. 3,7
Polonium physical properties Density: alpha phase: 9,196 g/cm3; beta phase: 9,398 g/cm3 Melting point: 254 0C Boiling point: 962 0C Heat of fusion: 13 kJ/mol Heat of vaporization: 102,91 kJ/mol Molar heat capacity: 26,4 J/mol.K Electrical resistivity: 0, 40 microohm.m Thermal conductivity: 20 W/m.K Atomic radius (empirical): 168 pm First ionization energy: 812,1 kJ/mol Crystalline structure: alpha-phase: cubic; beta phase: rhombohedral
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Is polonium similar to sulfur?
Polonium and sulfur are not similar. Polonium is a radioactive metal with toxic properties, while sulfur is a nonmetal element that is commonly found in nature. They have very different chemical and physical properties.
What happens to the chemical and physical properties of a substance formed in a chemical reaction?
The chemical properties of a substance change during a chemical reaction, meaning the substance undergoes a chemical change and forms new substances with different properties. The physical properties may also change, such as color, texture, or state of matter.
Which type of properties is easier to recognize physical or chemical?
Physical properties are generally easier to recognize compared to chemical properties because physical properties can be observed or measured without changing the substance's chemical composition. Examples of physical properties include color, size, shape, density, and melting point.
Are properties such odor color density and solubility physical or chemical properties?
Odor, color, density, and solubility are physical properties of a substance. These properties can be observed or measured without changing the chemical composition of the substance.
What is the chemical name for Po?
The chemical name for Po is Polonium.
Is polonium similar to sulfur?
Polonium and sulfur are not similar. Polonium is a radioactive metal with toxic properties, while sulfur is a nonmetal element that is commonly found in nature. They have very different chemical and physical properties.
Why are the properties of radium and polonium same?
Polonium and radium are radioactive chemical elements but they have not the same properties.
Does chemical and physical properties are probably the same?
No. Chemical and physical properties are different.
When do the physical and chemical properties change?
Physical and chemical properties change as the result of a chemical change, which produces new products with different physical and chemical properties than the reactants.
Difference between chemical and physical change?
A chemical change is when the chemical properties of a substance changes and a physical change is when the chemical properties stay the same but the physical properties (shape, temperature etc...)
Does copper have chemical or physical?
Copper has both chemical and physical properties. Chemical properties refer to how copper reacts with other substances, while physical properties refer to characteristics like its color, density, and conductivity.
Is sour milk a chemical properties or a physical properties?
Chemical property
What happens to the chemical and physical properties of a substance formed in a chemical reaction?
The chemical properties of a substance change during a chemical reaction, meaning the substance undergoes a chemical change and forms new substances with different properties. The physical properties may also change, such as color, texture, or state of matter.
Is a property of matter chemical or physical?
Matter has chemical properties (ex.: chemical reactivity) or physical properties (ex.: thermal conductivity).
Are fertilizers physical or chemical properties?
chemical
What are physical and chemical?
physical changes do not change the chemical properties of a substance
What are properties that change?
the properties that change are physical and chemical properties!!! :)
