Trends on the Periodic Table: Students learn to describe the pattern in atomic number, atomic mass, atomic radius, ionization energy, and electron affinity as they look across a period and down a ...

It is shown here that these radii account quantitatively for the bond lengths of many hydrides when added to the atomic and Golden ratio based ionic radii of many other atoms.

Zirconium is a metal in group IVB of the periodic table with atomic number 40, an atomic weight of 91.22, and a density of 6.49 Mg/m 3. Its melting point is 1852 C, and it boils at 3580 C. The ...

Its atomic radius is 0.235 nm and the (+1) ionic radius is 0.133 nm. In the solid state Potassium has a body-centered cubic crystal structure with a = 0.533 nm and a nearest neighbor distance of 0.277 ...

CBSE has released syllabus of Class 11 for the academic session 2016‒2017. The key contents of the syllabus issued by CBSE for Class 11th Chemistry are: Name of the Units and their weightage in ...

Larger K+ (ionic radius: 1.3 Å) can selectively permeate larger Na+ (ionic radius: 1.0 Å) through biological potassium ion channels, with selectivity ratios greater than 1000-fold.