Properties of elements flashcard

Front

Elements in group (column) one of the periodic table have _______ electron(s) in the outer shell?

Back

one, 1

Front

Which group of elements has the most valence electrons?

Back

Group 18.

Front

What do the dots on dot diagrams represent?

Back

The number of valence electrons on each atom in the element.

Front

Which two elements are most likely to react with each other: Oxygen and Krypton, Lithium and Krypton, Lithium, oxygen, and krypton will all react together, or Lithium and oxygen?

Back

Lithium and oxygen.

Front

Which element is the best conductor of electricity: Carbon, Lithium, or Krypton?

Back

Lithium.

Front

What are valence electrons?

Back

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

Front

How does the number of valence electrons change across a period in the periodic table?

Back

The number of valence electrons increases from left to right.

Front

What is the significance of group numbers in the periodic table?

Back

Group numbers indicate the number of valence electrons in the elements of that group.

Front

What is the general trend of reactivity in metals as you move down a group in the periodic table?

Back

Reactivity increases as you move down a group.

Front

What is the main characteristic of noble gases?

Back

They have a full outer shell of electrons, making them very stable and unreactive.