Periodic Table

Front

What are the horizontal rows in the periodic table called?

Back

Periods

Front

How many periods are there in the periodic table?

Back

There are 7 periods.

Front

Which group of elements has 8 valence electrons and is inert?

Back

Group 18 (Noble Gases)

Front

What are the characteristics of Noble Gases?

Back

They have 8 valence electrons, are inert, and are used in lighting.

Front

Which group of elements are good conductors of electricity and have high luster?

Back

Group 3-12 (Transition Metals)

Front

What are the properties of Transition Metals?

Back

They are good conductors of electricity, have high luster, and are less reactive than alkali and alkaline earth metals.

Front

Who was the first scientist to arrange elements based on physical/chemical properties and increasing atomic mass?

Back

Dmitri Mendeleev

Front

What did John Newlands discover about the arrangement of elements?

Back

He noticed that certain properties repeated every 8th element, leading to the concept of octaves.

Front

What is the significance of the periodic table in chemistry?

Back

It organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What are groups in the periodic table?

Back

Vertical columns that categorize elements with similar chemical properties.