b) Atoms of element B form hep lattice and those of element A occupies `2//3^(rd)` of tetrahedral voids. Calculate the formula of the compound formed by A and B. 

In a compound, atoms of element Y form ccp lattice and those of X occupy 2//3 rd of tetrahedral voids. The formula of the compound will be :

A compound is formed by two elements x and y. Atoms of the elements y make ccp (cubic close packing) and those of the element x occupy all the octahedral voids. What is the formula of the compound ?

A compound is formed by two elements x and y. Atoms of the element y (as anions) make ccp and those of the element x (as cations) occupy all the octahedral voids what is the formula of the compound?

A solid is formed by two elements P and Q. The element Q forms cubic close packing and atoms of P occupy two-third of tetrahedral voids. The formula of the compound is

A compund is made of two elements P and Q are in ccp arrangement while atoms P occupy all the tetrahedral voids. What is the formula of the compound?

The atomic number of an element 'X' is 20. (i) Determine the position of the element 'X' in the periodic table. (ii) Write the formula of the compound formed when 'X' reacts/combines with another element 'Y' (atomic number 8). (iii) What would be the nature (acidic or basic) of the compound formed ? Justify your answer.

In a fcc arrangement, the corner atoms are A type and those at face centres are B type. What is the simplest formula of the compound ?

An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a compound. (i) Write the position of these elements in the modern periodic table. (ii) Write the formula of the compound formed. Justify your answer in each case.

Three elements 'X', 'Y' and 'Z' have atomic numbers 7, 8 and 9 respectively. (i) State their positions (Group number and period number both) in the Modern Periodic Table. (ii) Arrange these elements in the decreasing order of their atomic radii. (iii) Write the formula of the compound formed when 'X' combines with 'Z'.