Periodic Table Review

Front

What is the definition of a halogen?

Back

Halogens are a group of elements in Group 17 of the periodic table, known for their reactivity and tendency to form salts with metals.

Front

Name the halogens in the periodic table.

Back

The halogens include Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), and Astatine (At).

Front

What is the definition of a noble gas?

Back

Noble gases are the elements in Group 18 of the periodic table, characterized by their lack of reactivity due to having a full valence shell.

Front

List the noble gases in the periodic table.

Back

The noble gases include Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).

Front

What is the most reactive group of metals in the periodic table?

Back

Group 1, known as the Alkali metals, is the most reactive group of metals.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

How do you calculate the number of neutrons in an atom?

Back

The number of neutrons can be calculated by subtracting the atomic number from the atomic mass (Neutrons = Atomic Mass - Atomic Number).

Front

What is the significance of groups in the periodic table?

Back

Groups in the periodic table are vertical columns that contain elements with similar chemical properties and the same number of valence electrons.

Front

What are the properties of alkali metals?

Back

Alkali metals are highly reactive, have low melting points, and are soft enough to be cut with a knife.

Front

What is the periodic trend for reactivity in nonmetals?

Back

In nonmetals, reactivity increases as you move up a group and decreases as you move across a period from left to right.