Exam 2: Atoms and Molecules

The nucleus is comprised of the atom's protons and electrons.

The molecular formula of calcium phosphate is:

How many electrons are present in a ⁴⁰Ca²⁺ species?

The correct molecular formula of tin(IV)oxide is:

The correct systematic name of V₂O₅ is divanadium pentoxide.

When electrons are shared between pairs of atoms rather than donated from one atom to another or mobile across an entire lattice, a(n) ____________________ bond is present.

For a given family (ie. the alkali metals), the element in which period is most reactive?

The correct systematic name of AlCl₃ is aluminum chloride.

All polymers form rigid solids at standard temperature and pressure.

The ratio of isotopes for a given element can be measured instrumentally using a(n) ____________________.

The correct molecular formula of rubidium chloride is:

The systematic (IUPAC) name of CuO is:

Cations are particles with fewer electrons than protons.

The average mass of an atom is determined by

The correct molecular formula for iron(II)bromide is:

A horizontal row of elements on the periodic table is referred to as a family.

The correct molecular formula of dinitrogen pentoxide is:

Pentane has a five carbon atom skeleton

The systematic (IUPAC) name of MgI₂ is:

Ions of opposite charges attract one another. This attraction is governed by: