11th chemistry chapter 10 ( S - block elements) notes
Mp board 11th chemistry chapter 10 (s- block elements) मप्र बोर्ड 11वीं केमिस्ट्री चैप्टर 10 (एस- ब्लॉक एलिमेंट्स) By_ vikas lodhi CLASS - 11 TH CHEMISTRY CHAPTER 10 : S- BLOCK ELEMENTS Important points Groups (1 & 2) belong to the s-block of the Periodic Table. Group 1 consists of : lithium, sodium, potassium, rubidium, caesium and francium and collectively known as the alkali metals. Group 2 include : beryllium, magnesium,calcium, strontium, barium and radium. Except Beryllium they are known as alkaline Physical properties- a) Large atomic radii: The atomic radii of alkali metals are the largest in their respective periods. These increase as we travel down the group. b) Large ionic radii : The ionic radii increase as we move down the group due to the addition of a new energy shell with each succeeding element. c) Low ionization enthalpy : The ionizat...