The atomic no. of two elements A and B are 1 and 20 respectively, if they form a compound what will be its formula? What wil be the nature of the compound.(ionic or covalent)?

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

A Cubic solid is made of two elements X and Y, atom Y are at the comers of the cube and X at the body centre. What is the formula of the compound?

The atomic weight and equivalent weight of an element are 27 and 9 respectively. What is the formula of it’s chloride?

The pair of elements which on combination are most likely to form an ionic compound is

The atomic number of an element A is 20 and that of another element B is 17. write down their electronic configuration. Will they produce an electrovalent compound or covalent compound? What will be their valencies? What will be the probable formula of the compound formed between them?

Atomic mass of two compounds A and B is 30 and 60 respectively. Iff Xg of A contains Y atoms then no of atoms present in 2Xg of B is-

A crystalline compound formed by elements A and B has facecentred cubic unit cell. The corners and the face-centred of the unit cell are occupied by A and B atoms, respectively. If one of the corner-atoms is found to be missing, then what would the formula of the compound be?

(a) A crystalline compound formed by element A and B has face-centred cubic unit cell. The corners and the face centres are occupied by A and B atoms respectively. If one of the corner atoms is found missing then what would be the formula of the compound? (b) Give an example of a compound which exhibits both Schottky and Frenkel defects.