Chemistry homework 5

What is the correct molecular geometry of NH₃ according to Valence Shell Electron Pair Repulsion Theory? A) trigonal planar B) trigonal pyramidal (pyramidal) C) bent D) tetrahedral

B) trigonal pyramidal (pyramidal)

In a covalent bond A) two atoms exchange electrons and the ions are attracted to one another. B) two ions come together and form a crystal lattice. C) two atoms share valence electrons and those shared electrons form the chemical bond. D) two elements react and form a new compound.

C) two atoms share valence electrons and those shared electrons form the chemical bond.

Which of the following best describes what happens when an ionic bond forms? A) two atoms come together and share electrons in order to fill their octets. B) two atoms give up their electrons in order to form a bond. C) two atoms, one atom which is more electronegative than the other, exchange electrons and the charges hold the atoms together. D) Two atoms with similar electronegativities exchange electrons and the charges hold the atoms together.

C) two atoms, one atom which is more electronegative than the other, exchange electrons and the charges hold the atoms together.

The best reason for why a covalent bond forms is A) two atoms exist as ions and the ions are attracted to each other. B) the atoms that form cations have low ionization energy and anions have high electron affinity, so the two atoms exchange electrons. C) nonmetal atoms cannot react with each other unless they share electrons. D) atoms with high electronegativities will not lose electrons, so instead they share electrons to reach a stable number of valence electrons.

D) atoms with high electronegativities will not lose electrons, so instead they share electrons to reach a stable number of valence electrons.