Exam 3: Elements, Compounds, and the Periodic Table

Aluminum reacts with a second element, which we will represent by the symbol E, to form a compound whose formula is AlE₃. Element E is most probably

Metalloids are capable of conducting an electric current.

Which is a correct formula for mercury(I)phosphate? Hint: Remember that mercury (I)is not a single atom.

The formula for the compound formed between arsenic (As)and hydrogen is

The formula for the compound formed from the barium ion and SO₃^2- is ________.

It is important to specify how many cations and anions are present in ionic compounds.

The name for K₂Cr₂O₇, is potassium dichromium heptaoxide.

One of the components of kerosene is an alkane with 16 carbon atoms. Which formula is an alkane?

An element is found to have a high conductivity in its pure form, is malleable, and is ductile. Based on these properties, this element would be best classified as ________.

Which formula is correct because it represents a known ionic compound?

What is the correct formula for magnesium sulfate?

In which family of elements does Ca belong?

What is the name for the compound Si₃N₄?

What are the likely formulas of three different hydrocarbons each with 5 carbon atoms?

What is the total number of atoms reacting in the chemical reaction below? 2C₆H₁₄ + 19O₂ $\rarr$ 12CO₂ + 14H₂O

Balance the following equation:VCl₃ + Na + CO → V(CO)₆ + NaCl

Which element is a gas at room temperature (about 25°C)?

The elements in a specific column of the periodic table are known as

Which compound is correctly indicated as cobalt(II)chloride hexahydrate?

What is the formula for dichlorine heptoxide?