Determine the electron configuration of the phosphide

Question

1. Determine the electron configuration of the phosphide ion (P3-) is?

2. Determine the numbers of unpaired electrons are there in the Lewis structures of a N3- ion?

3. In counting the electron domains around the central atom in the VAEPR theory, a ________ is not included.

• single covalent bond
• core level electron pair
• triple covalent bond
• double covalent bond
• non bonding pair of electrons

4. Of the ions below, only _________ has a noble gas electron configuration.

• S3-
• I+
• Cl-
• K-
• O2-

5. The N-N bond in HNNH consist of

• one σ bond and two π bonds
• one σ bond and one π bond
• two σ bonds and one π bond
• one σ bond and no π bonds
• two σ bonds and two π bonds

6. The molecular geometry of the CHCl3 molecule is

• bent
• trigonal pyramidal
• T-shaped
• tetrahedral
• trigonal planar