Question

(a) Write the name and symbol of alkali metal with the smallest atomic number. (b) Which element has atomic number 14? Give its valency. (c) Write IUPAC name of following: (i) CH3CH2Br (ii) CH3CH2 -C º CH (d) What is meant by catenation? Why does carbon show catenation to maximum extent? (e) Give one example each of (i) diprotic acid, (ii) triprotic acid

Answer 1

b) silicon valency 1s² 2s² 2p^6 3s² 3p²
c) 1-bromo-ethane
d) self linking property of carbon