atomic radius वाक्य
उदाहरण वाक्य
मोबाइल
- Since the core charge increases as you move across a row of the periodic table, the outer-shell electrons are pulled more and more strongly towards the nucleus and the atomic radius decreases.
- The effect results from poor shielding of nuclear charge ( nuclear attractive force on electrons ) by 4f electrons; the 6s electrons are drawn towards the nucleus, thus resulting in a smaller atomic radius.
- Carbon's atomic radius is 77 picometers, silicon's is 118 picometers, germanium's is 123 picometers, tin's is 141 picometers, and lead's is 175 picometers.
- It often also falls in the same range for reaction order, Even though the lanthanides are one row farther down the periodic table than yttrium, the similarity in atomic radius may be attributed to the lanthanide contraction.
- For example, the atomic radius of the metal zirconium, Zr, ( a period-5 transition element ) is 159 pm and that of hafnium, Hf, ( the corresponding period-6 element ) is 156 pm.
- These bond strengths correlate with the electronegativity of the halogen, decreasing in the order F > Cl > Br > I . This periodic order also follows the atomic radius of halogens and the length of the carbon-halogen bond.
- This results in systematic group trends : as one goes down group 18, the atomic radius, and with it the interatomic forces, increases, resulting in an increasing melting point, boiling point, enthalpy of vaporization, and solubility.
- The presence of a chlorine atom, having greater atomic radius than that of fluorine, hinders the close packing possible in PCTFE . This results in having a relatively lower melting point among fluoropolymers and it is around 210-215 �C.
- In single-electron atoms, the average separation of an electron from the nucleus is determined by the subshell it belongs to, and decreases with increasing charge on the nucleus; this in turn leads to a decrease in atomic radius.
- For atoms, the wavelength of the emitted light is about 10, 000 times the atomic radius, and the dipole moment is the only contribution to the radiative field, while all other details of the atomic charge distribution can be ignored.
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