ionic radii

In the first row transition elements the ionic radii decreases with increase in atomic number. The value of ionic radii also depends on the oxidation state of metals. As the oxidation state increases the ionic radii decreases and as the o..

These are radii of ions in ionic crystals. Ionic radius may be defined as the effective distance from the center of nucleus of an ion up to which it has an influence on its electron cloud. In ionic compounds the inter nuclear distance may be taken as equal to..

The atomic and ionic radii of the elements of this group increase on going down the group. This is due to the increase in the number of electron shell..

The halogens have the smallest atomic radii in their respective periods due to maximum effective nuclear charge. Among themselves, the atomic and ionic radii increase with increase in atomic number. This is due to increase in the number of electron shell..

The ionic radii in a particular group increases in moving from top to bottom because of the increase in the principal quantum number though the number of electrons in the valence shell remains the same. In isoelectronic series of ions, as the nuclear charge increases the electr..

The atomic and ionic radii of alkaline Earth metals are smaller than the corresponding members of the alkali metals. This is due to the fact of Group 2 elements having a higher nuclear charge allow electrons to be attracted more towards the nucleus. This reduces the size of ato..

The atomic and ionic radii of group 13 elements are compared to corresponding elements of group 2. This is due to the increase in nuclear charge when one moves from, element of group 2 to group 13 in the same period. As the elements are considered from left to right in the peri..

In lanthanides there is a gradual increase in atomic size, atomic radii and ionic radii with increase in atomic number. This regular decrease is known as lanthanide contractio..

The alkali metal ions are highly hydrated. The smaller the size of the ion, the greater is the degree of hydration. Thus, Li + ion gets much more hydrated than Na + ion which in turn is more hydrated than K + ion and so on. The extent of hydration decreases down the group. As a result of larger..

Ionic radii increases down a group. Na + < K + < Rb + < Cs + F - < Cl - < Br - < I - This is because the number of shells increase. screening effect increases..