Question

(i) catenation
(11) ISUNCIS
10. What is ionization energy of an element ?
water molecules
11.Name one noble gas​

Answer 1

Catenation : It is the self linking of carbon atoms with other monovalent atoms .

Noble Gases : Helium , Neon , Krypton , argon etc ...

Ionisation of energy : It is the minimum amount of energy required to remove the electron from the isolated neutral gaseous atom .