Vikas YadavMay 10, 20211 minWhat is atomic radius? Why does atomic radius decrease across a period? What is atomic radius? Why does atomic radius decrease across a period? Answer – Atomic radius is defined as the distance from the center...
Vikas YadavMay 10, 20211 minGive reasons: (i) The elements of group 18 are called zero valent. (ii) Group 17 elements form unineGive reasons: (i) The elements of group 18 are called zero valent. (ii) Group 17 elements form uninegative anions. Answer – (i) Group 18...
Vikas YadavMay 10, 20211 minWhat do you understand by the term periodicity? Does the periodicity in properties is a function of What do you understand by the term periodicity? Does the periodicity in properties is a function of valence electrons? Illustrate. Answer...
Vikas YadavMay 10, 20211 minName the element which is in (i) First group and third period (ii) Seventeenth group and second periName the element which is in (i) First group and third period (ii) Seventeenth group and second period. Answer - (i) Sodium (ii) Fluorine