Chemistry Challenge

What is the electron configuration of a chromium atom in its ground state?

Which of the following molecules exhibits hydrogen bonding as its strongest intermolecular force?

• 1

• 2

• 3

• 4

Which of the following is not a characteristic reaction of alkanes?

• Substitution

• Addition

• Combustion

• Cracking

In a thermodynamic process, if the system does work on the surroundings and absorbs heat from the surroundings, the internal energy of the system:

• Increases

• Decreases

• Remains the same

• Cannot be determined without more information

• +0.76 V

• -0.76 V

• +1.10 V

• -1.10 V

Which of the following elements has the highest electronegativity?

• Fluorine

• Oxygen

• Nitrogen

• Chlorine

• Ethanoic acid

• Propanoic acid

• Butanoic acid

• Methanoic acid