Exam 2: Atoms, molecules, and Ions

Use the periodic table below to answer the following questions. -Which is most likely to form a binary oxide with the formula M₄O₁₀ (where M = element A,B,C,or D)?

Isotopes have the same number of ________ but different numbers of ________ in their nuclei.

The compound,Cu(ClO₃)₂,is named

What is the charge on the Cr in the ionic compound Cr₂O₃?

How many protons (p)and neutrons (n)are in an atom of ?

The ion,IO₂^-,is named

-Which of the above drawings represents a mixture?

In which of the following sets do all species have the same number of protons?

The number of moles of Li in 34.7 g Li is ________.

Which reaction below represents Decay by alpha emission?

Which of the compounds,C₃H₈,MgCl₂,Zn(NO₃)₂,OCl₂,are expected to exist as molecules?

Which of the following is the correct chemical formula for a molecule of astatine?

The observation that 4.0 g of hydrogen reacts with 32.0 g of oxygen to form a product with O:H mass ratio = 8:1,and 6.0 g of hydrogen reacts with 48.0 g of oxygen to form the same product With O/H mass ratio = 8:1 is evidence for the law of

In which set do all elements tend to form cations in binary ionic compounds?

Sodium metal and water react to form hydrogen and sodium hydroxide.If 5.98 g of sodium react with water to form 0.26 g of hydrogen and 10.40 g of sodium hydroxide,what mass of water was involved in the reaction?

When a substance decays by alpha radiation,the mass number of the nucleus ________ and the atomic number ________.

How many electrons are in a neutral atom of bromine-81?

The atoms of a particular element all have the same number of protons as neutrons.Which of the following must be true?

Use the periodic table below to answer the following questions. -Which is most likely to form a binary oxide with the formula MO₃ (where M = element A,B,C,or D)?

The missing reactant in the nuclear reaction ? → + is ________.