5.1: Development of the Modern Periodic Table

How are elements organized in the periodic table?

• By increasing atomic number

• By decreasing atomic number

• By alphabetical order

• By date of discovery

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What is the periodic law?

• The periodic law states that the properties of elements are a periodic function of their atomic numbers.

• The periodic law states that elements are arranged in order of increasing atomic mass.

• The periodic law states that elements are grouped by their chemical properties.

• The periodic law states that the properties of elements are a periodic function of their atomic weights.

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A group in the context of the periodic table is:

• a row of elements with similar properties

• a column of elements with similar properties

• a set of elements with the same atomic number

• a collection of elements with the same atomic mass

What are representative elements?

• Elements in the s and p blocks of the periodic table

• Elements in the d block of the periodic table

• Elements in the f block of the periodic table

• Elements in the transition metals category

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Transition elements are metals that have partially filled d orbitals. Which of the following is a characteristic of transition elements?

• these elements are all liquid at room temperature

• they transition from being like a nonmetal to a metal as you go down the group

• They do not conduct electricity.

• They are all gases at room temperature.

What is a nonmetal?

• good conductor of heat and electricity

• poor conductor of heat and electricity; brittle

• high magnetic properties

• A type of liquid

A metalloid is a type of element that has properties in between metals and non-metals. Which of the following is a metalloid?

• Carbon

• Silicon

• Oxygen

• Iron

In the late 1700s, which French scientist compiled a list of all the elements known at the time?

• Antoine Lavoisier

• Joseph Proust

• Louis Pasteur

• Marie Curie

During the 1800s, scientists developed techniques for separating different elements and identifying their characteristics. Which of the following techniques was developed during this period?

• Spectroscopy

• Chromatography

• Mass spectrometry

• X-ray crystallography

John Newlands arrangement of the elements showed the pattern where every 8th element was similar. This is called the...

• Periodic Law

• Law of Octaves

• Atomic Theory

• Quantum Mechanics

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