Periodicity

Front

What is the periodic law?

Back

The periodic law states that when elements are arranged by their atomic number, there are repeating patterns in their chemical properties.

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 does electronegativity change across a period and down a group?

Back

Electronegativity increases across a period and decreases down a group, with a drop-off at noble gases.

Front

What is the electron configuration for oxygen?

Back

Front

How many electrons does a neutral oxygen atom have?

Back

A neutral oxygen atom has 8 electrons.

Front

What is an orbital diagram?

Back

An orbital diagram is a visual representation of the electron configuration of an atom, showing the distribution of electrons in atomic orbitals.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number and properties, revealing trends and relationships among them.

Front

Define electronegativity.

Back

Electronegativity is a measure of an atom's ability to attract and hold onto electrons in a chemical bond.

Front

What is the trend for atomic radius in the periodic table?

Back

Atomic radius decreases across a period and increases down a group.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.