Two elements 'A' and 'B' (atomic weights 75 and 16 respectively) combine to give a compound having `75.8%` of 'A'. The compound has the formula (St. John's) 

Two elements X and Y have atomic weight of 14 and 16 . They form a series of compounds , A , B , C with fixed mass of X , Y is present in the ratio 1 :2 : 3 : 4 : 5 . If the compound A has 28 parts by weight of X and 16 parts by weight of Y , then the compound C will have 28 parts by weight of X and

The mass numbers of two elements X and Z are 52 and 75 respectively . X contains 16.6% more neutrons compared to protons . Z contains 27.3% more neutrons compared to protons . X and Z are respectively

A and B are elements with atomic numbers 16 and 17. Write different combinations of binary compounds known from them.

A cubic solid is made of two elements P and Q . Atoms of Q are at the corners of the cube and P at the body - centre . What is the formula of the compound ? What are the coordination numbers of P and Q ?

From analysis and molecular weight determination the molecular formula of a compound (A) is C_(3)H_(7)NO . The compound gives the following information. i) On hydrolysis it gives an amine (B) and Carboxylic acid (C) ii) Amine (B) reacts with benzne sulphonyl chloride and gives a product which is insoluble in aqouesous sodium hydroxide solution iii) Acid (C) on reaction with Tollens reagent gives a silver mirror. What is compound (B) ?

From analysis and molecular weight determination the molecular formula of a compound (A) is C_(3)H_(7)NO . The compound gives the following information. i) On hydrolysis it gives an amine (B) and Carboxylic acid (C) ii) Amine (B) reacts with benzne sulphonyl chloride and gives a product which is insoluble in aqouesous sodium hydroxide solution iii) Acid (C) on reaction with Tollens reagent gives a silver mirror. Compound 'C' is

From analysis and molecular weight determination the molecular formula of a compound (A) is C_(3)H_(7)NO . The compound gives the following information. i) On hydrolysis it gives an amine (B) and Carboxylic acid (C) ii) Amine (B) reacts with benzne sulphonyl chloride and gives a product which is insoluble in aqouesous sodium hydroxide solution iii) Acid (C) on reaction with Tollens reagent gives a silver mirror. Compound 'A' is