Chemistry Fill in the blanks Set 27

Chemistry Fill in the blanks Set 27

1. The Arabic word `Alquili' means plant ash.
 
2. The electronic configuration of potassium is 1s2 2s2 2p6 3s2 3p6 4s1.
 
3. All alkali metals have low melting and boiling points.
 
4. On moving down the group of alkali metals, ionization energy decreases.
 
5. Lithium is the lightest of all solid elements.

6. Dioxygen is also called as molecular oxygen.
 
7. Atomic oxygen combines with molecular oxygen to give ozone.
 
8. The ozoniser commonly used in the preparation of ozone are Sieman̛ s ozoniser and Brodies ozoniser.
 
9. Ozone can liberate a nascent oxygen easily .
 
10. Ozone is used in the manufacture of synthetic camphor.