91Ó°ÊÓ

Which elements are more electronegative: semimetals or nonmetals?

Predict which element in each of the following pairs is more electronegative according to the general trends in the periodic table: (a) Br or Cl (b) O or S (c) Se or As (d) \(N\) or \(F\)

Predict which element in each of the following pairs is more electronegative according to the general trends in the periodic table: (a) Se or Br (b) \(C\) or \(B\) (c) Te or S (d) Ba or Be

Which of the following elements occur naturally as diatomic molecules: \(\mathrm{H}, \mathrm{N}, \mathrm{Cl}, \mathrm{Br}, \mathrm{Ar} ?\)

Which of the following elements occur naturally as diatomic molecules: He, \(\mathrm{O}, \mathrm{F}, \mathrm{I}, \mathrm{Ne} ?\)

An oxygen atom can bond to a hydrogen bromide molecule to give \(\mathrm{HBrO}\). Draw the electron dot formula for \(\mathrm{HBrO}\) and label a coordinate covalent bond.

An oxygen atom can bond to a hydrogen iodide molecule to give HIO. Draw the electron dot formula for HIO and label a coordinate covalent bond.

An oxygen atom can bond to a HBrO molecule to give \(\mathrm{HBrO}_{2} .\) Draw the electron dot formula for \(\mathrm{HBrO}_{2}\) and label a coordinate covalent bond.

An oxygen atom can bond to a HIO molecule to give \(\mathrm{HIO}_{2}\). Draw the electron dot formula for \(\mathrm{HIO}_{2}\) and label a coordinate covalent bond.

A hydrogen ion can bond to an ammonia molecule, \(\mathrm{NH}_{3}\), forming \(\mathrm{NH}_{4}^{+}\). Draw the electron dot formula for \(\mathrm{NH}_{4}^{+}\) and label a coordinate covalent bond.