Organization of the Periodic Table and Periodic Trends

Front

What are elements in the same group known for?

Back

Elements in the same group have similar chemical properties.

Front

What are horizontal rows on the periodic table called?

Back

Horizontal rows on the periodic table are called periods.

Front

Who is known for the 'Law of Octaves' in organizing elements?

Back

Newlands created rows of elements based on repeating properties referred to as 'The Law of Octaves'.

Front

How does electronegativity change across a period and down a group?

Back

Electronegativity increases from left to right within a period and decreases from top to bottom within a group.

Front

What happens to atomic size as you move down the periodic table?

Back

Atoms get bigger as you move down the periodic table because they have more energy levels.

Front

What is a group in the periodic table?

Back

A group is a vertical column in the periodic table where elements share similar properties.

Front

What is a period in the periodic table?

Back

A period is a horizontal row in the periodic table that indicates the energy level of the elements.

Front

What trend is observed in atomic radius across a period?

Back

Atomic radius decreases from left to right across a period.

Front

What trend is observed in atomic radius down a group?

Back

Atomic radius increases as you move down a group.

Front

What is the significance of Mendeleev's periodic table?

Back

Mendeleev's periodic table organized elements by increasing atomic mass and predicted the properties of undiscovered elements.