Periodic Table Flashcard

Front

What is Hund's Rule?

Back

Hund's Rule states that electrons will fill degenerate (equal energy) orbitals singly before pairing up in any orbital.

Front

How do you determine the group of elements with similar chemical properties?

Back

Elements in the same group (vertical column) of the periodic table have similar chemical properties due to having the same number of valence electrons.

Front

Which group of elements is known as the halogens?

Back

Group 7A (17) elements, which include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At), are known as halogens.

Front

What is the electron configuration for Strontium (Sr)?

Back

The electron configuration for Strontium (Sr) is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s².

Front

What are the alkali metals?

Back

Alkali metals are the elements in Group 1 of the periodic table, which include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). They are known for being highly reactive.

Front

What are noble gases?

Back

Noble gases are the elements in Group 18 of the periodic table, which include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). They are characterized by their lack of reactivity due to having a full valence shell.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties, allowing for the prediction of element behavior.

Front

What are chalcogens?

Back

Chalcogens are the elements in Group 16 of the periodic table, which include oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po). They are known for forming compounds with metals.

Front

What is the difference between chemical and physical properties?

Back

Chemical properties describe a substance's ability to undergo chemical changes, while physical properties can be observed without changing the substance's chemical identity.

Front

What is an atomic orbital?

Back

An atomic orbital is a region in an atom where there is a high probability of finding electrons. Orbitals are defined by quantum numbers and can hold a maximum of two electrons.