Chemistry Quiz exam 3

Which ion has the following electronic configuration: [Kr] 4d¹⁰ 5s² 5p⁶ ?

• K⁻

• I⁻

• Br⁻

• Te⁻

• None of the above

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is determined by the lowest potential energy between two non-metals?

• Bond energy

• Bond angle

• Bond length

• Bond hybridization

• None of the above

Tags

NGSS.HS-PS1-4

What type of bond has an electronegativity difference of zero between the two bonded atoms?

• Polar Ionic

• Ionic

• Polar covalent

• Pure covalent

• None of the above

Which of the following bonds has the greatest polarity?

• H-F

• H-O

• H-N

• H-C

• None of the above

Which of the following is correct regarding the Lewis structure for ICl₄⁻?

• There is a total of 35 valence electrons

• There is one (1) lone pair of electrons on iodine

• There is a total of six (6) electrons on iodine

• The total number of electrons around iodine is eight (8)

• None of the above

Which of the following is correct about the formal charges on the atoms in BrCl₃?

• Cl = 1-

• Br = 0

• Br = 3+

• Cl = 1+

• None of the above

Which of the following have resonance structures (hint: draw the Lewis structures)?

• H₂S

• H₃O⁺

• N₂O

• CO₃²⁻

• None of the above

Use bond energies to calculate the enthalpy change for the reaction H₂ + Br₂ → 2 HBr. H-H = 436 kJ/mol H-Br = 370 kJ/mol Br-Br = 190 kJ/mol

• 1366 kJ

• 114 kJ

• -114 kJ

• 626 kJ

• None of the above

Tags

NGSS.HS-PS1-4

Which of the following lattice energy comparisons is correct?

• ZnO < NaCl

• Al₂O₃ < Al₂Se₃

• BaS < K₂S

• BaS < BaCl₂

• None of the above

Which of the following is the correct electron pair geometry / molecular geometry for H₂O?

• Linear / Linear

• Tetrahedral / Linear

• Tetrahedral / Tetrahedral

• Tetrahedral / Bent

• None of the above