Question

write the Atomic and ionic radii​

Answer 1

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Atomic radii of the elements of the transition series decrease gradually from left to right. As we move across a transition series from left to right the nuclear charge increases by one unit at a time. The last filled electron enters a penultimate (n-1)d subshell. However, d orbitals in an atom are less penetrating or more diffused and, therefore d electrons offer smaller screening effect. The result is that effective nuclear charge also increases as the atomi number increases along a transition series. Hence the atomic radii decrease gradually across a transition series from left to right.

Answer 2

Answer:

In a neutral atom, the atomic and ionic radius are the same, but many elements exist as anions or cations. If the atom loses its outermost electron , the ionic radius is smaller than the atomic radius because the atom loses an electron energy shell.