Question

1. choose the best answer using the periodic table.

what is the formula for this compound, dinitrogen trioxide?
no3
n23o
n2o3
n3o

1. choose the best answer using the periodic table.

which type of bond is expected between two cobalt (co) atoms?
metallic bond
van der waals bond
ionic bond
covalent bond

Explanation:

Question 9

To determine the formula for dinitrogen trioxide, we use the prefixes in the name. "Di-" means 2, so there are 2 nitrogen (N) atoms. "Tri-" means 3, so there are 3 oxygen (O) atoms. Thus, the formula is \( \text{N}_2\text{O}_3 \).

Cobalt (Co) is a metal. Metallic bonds occur between metal atoms, where valence electrons are delocalized. Van der Waals bonds are weak intermolecular forces, ionic bonds are between metals and non - metals, and covalent bonds are between non - metals. So, two Co atoms will form a metallic bond.

Answer:

C. \( \text{N}_2\text{O}_3 \)

Question 10