Class 3 anions | Classifications of cations in group

Master Class on Biological Classification

Which of the following statement is/are incorrect in the rock-salt structure if an ionic compounds ? (A) coordination number of cation is four where as that of anion is six. (B) coordination number of cation is six where as that of anion is four. (C) coordination number of each cation and anion is four. (D) coordination number of each cation and anion is six.

An ionic compound is made up of cations A and anions B . if cations A are at the alternate corners and anions are at the alternate faces of the cubic unit cell then empirical formula of the compound will be

IF the radius ratio of cation to anion is in the range of 0.225 - 0.414 , then the coordination number of cation will be _________.

The cation/anion radius ratio for a triangular arrangement of anions in which the cation is in contact with the anions (but does not push them apart) as shown in the figure is

Classification of Algae into 11 classes was made by Fritsch on the basis of flagellation, pigmentation and type of reserve food. Out of this, the main criteria used in algal classification grouping of algae is

Cation and anions are formed in