Chemistry Test Electron Config/VSEPR

Which of the following groups contains no ionic compounds?

• HCN, NO₂, Cu(NO₃)₂

• PCl₃, LiBr, Zu(OH)₂

• NaH, CaF₂

• KOH, CCl₄, SF₄

• CH₂O, H₂S, NH₃

When a metal reacts with a nonmetal a covalent bond is formed.

• True

• False

Atoms having equal or nearly equal electronegativities are expected to have

• no bonds

• polar covalent bonds

• nonpolar covalent bonds

• ionic bonds

• covalent bonds

An element "E" has the electron configuration [Kr]5s²4d¹⁰5p². The formula for the fluoride of "E" is most likely

• EF₁₄

• EF₄

• EF

• EF₆

• EF₈

All halogens have the following number of valence electrons:

• 2

• 3

• 0

• 7

• none of the above

Ti has ____ in its d orbitals

• one electron

• two electrons

• three electrons

• four electrons

• none of these

Germanium (Ge) has ___________ in its 4p orbitals.

• one electron

• two electrons

• three electrons

• four electrons

• none of these

An element with the electron configuration [Xe]6s²4f¹⁴5d⁷ would belong to which part of the periodic table?

• transition elements

• alkaline earth elements

• halogens

• inert gases

• none of the above

In which of the following groups do all the elements have the same number of valence electrons?

• P, S, Cl

• Ag, Cl, Ar

• Na, Ca, Ba

• P, As, Se

• None of these

How many unpaired electrons are there in an atom of sulfur?

• 0

• 1

• 2

• 3

• 4