1. Which of the following is the first quantum number that describes the size and the energy of the
orbital and relative distance from the nucleus?
a. spin quantum number
b. angular momentum C. magnetic
d. principle
2. Which of the following compounds exhibits covalent bonding?
a. Nach
b. H2O
c. Al2O3
d. Mg2C
3. Among the groups in the periodic table, which set of elements are the most unreactive?
a. Halogens
b. Noble gases
c. Lanthanides
d. Actinides
4. On the basis of Rutherford's model of atom which subatomic particles are present in the nucleus of an
1. Electron
2. Proton
3. Neutron
a. 1 only
b. 2 and 3
C. 1 and 3
d. 2 only
5. Which of the following sublevels is correctly designated?
a. 1p
b. 3f
c. 2p
d. 3d¹¹​