The radii of F, F–, O and O2– are in the order of
The size of O2– > F– and that of O > F. Therefore, the overall order is: O2– > F– > O > F.
The ionic radius of ‘Cr’ is minimum in which of the following compounds?
Which of the following processes involves absorption of energy?
In which of the following compounds does the ratio of anion size to cation size has the lowest value?
The five successive ionization energies of an element are 800, 2427, 3658, 25024 and 32824 kJ mol–1 respectivley. The number of valence electrons is
Which among the following species has the same number of electrons in its outermost as well as penultimate shell?
The statement that is not correct for periodic classification of elements is
The electronic configuration of Gadolinium (At. No. 64) is
The first ionization potential (eV) of Be and B respectively are
Which of the following remains unchanged on descending a group in the periodic table
Point out the wrong statement, in a given period of the periodic table, thes-block elements has, in general, a lower value of