Atomic Number & Groups

Front

What is the atomic number of carbon?

Back

6

Front

True or False: The atomic number is equal to the number of protons in an atom.

Back

True

Front

What does the atomic number represent in an element?

Back

The number of protons in the nucleus of an atom.

Front

Which group in the periodic table is known for having one electron in their outer energy level?

Back

Alkali metals.

Front

Why are alkali metals considered the most reactive group in the periodic table?

Back

They have only one electron in their outer energy level.

Front

What elements readily react with alkali metals?

Back

Fluorine (F) and Chlorine (Cl).

Front

What is the relationship between atomic number and protons?

Back

The atomic number is the same as the number of protons.

Front

What is the significance of the atomic number in the periodic table?

Back

It determines the position of an element in the periodic table and its chemical properties.

Front

How does the number of electrons relate to the atomic number in a neutral atom?

Back

In a neutral atom, the number of electrons is equal to the atomic number.

Front

What are the characteristics of alkali metals?

Back

They are highly reactive, have low density, and have one electron in their outer shell.