Atom of seven elementsA,B ,C, D, E,F and G have a differentnumber of electronic shells but havethe same number of electrons in their outermostshells.The element A and C combine with chlorine to form an acidand common salt respectively. The oxide of element A is liquidat room temperatureand is a neutral substancewhile the oxides of theremainingsix elements are basic in nature . Based on the above information, anwerthe followingquestion given ahead : What would be the ratio of number of combining atoms in a compoundformed by the combination element A with carbon ?

Atom of seven elementsA,B ,C, D, E,F and G have a differentnumber of e

1.	Atom of seven elementsA,B ,C, D, E,F and G have a differentnumber of electronic shells but havethe same number of electrons in their outermostshells.The element A and C combine with chlorine to form an acidand common salt respectively. The oxide of element A is liquidat room temperatureand is a neutral substancewhile the oxides of theremainingsix elements are basic in nature . Based on the above information, anwerthe followingquestion given ahead : What would be the ratio of number of combining atoms in a compoundformed by the combination element A with carbon ?
Answer» Solution :Since all the SEVEN elementshave same number of electron in their outermostshells, this meansthat they belongto the same GROUP. From the availableinformation , it becomesclear that the group of alkali metals ( group 1 ) . Hydrogen (A) is also included. The elements presentare : Let us answerthe question asked . The compoundformed between A (H) and carbon is methane `(CH_4)`. In this the two elementsare presentin the ratio of 1: 4 .