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, answerthe followingquestion given ahead : Which one of the given elements is likely to have the smallestatomic radius ?.

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, answerthe followingquestion given ahead : Which one of the given elements is likely to have the smallestatomic radius ?.
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 element A (hydrogen ) has the smallestatomic radiussince it is the firstelement ofthe group.