Atomic Structure and Periodic Table 2022

Front

What is Electronegativity?

Back

Electronegativity is how good an atom is at attracting electrons.

Front

Which element has the LESSER electronegativity: Cl or Al?

Back

Al has the lesser electronegativity compared to Cl.

Front

What is the FULL electron configuration for Ca2+?

Back

The full electron configuration for Ca2+ is 1s2 2s2 3s2 3p6.

Front

Why was Mendeleev's periodic table unique?

Back

Mendeleev's periodic table was unique because it predicted undiscovered elements.

Front

What element has the electron configuration 1s2 2s2 2p6 3s2 3p3?

Back

The element with this electron configuration is Phosphorus (P).

Front

Define Atomic Number.

Back

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

Front

What is the significance of the Periodic Table?

Back

The Periodic Table organizes elements based on their atomic number, electron configurations, and recurring chemical properties.

Front

What are Noble Gases?

Back

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

Front

What is an Ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net electrical charge.

Front

Explain the term 'Valence Electrons'.

Back

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