Properties of elements flashcard

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

Which group in the periodic table has the most valence electrons?

Back

Group 18 (Noble gases) has the most valence electrons, which is 8, except for Helium which has 2.

Front

What is the electron configuration of elements in Group 1 of the periodic table?

Back

Elements in Group 1 have one valence electron in their outer shell.

Front

Why are elements with 7 valence electrons highly reactive?

Back

They are reactive because they want to gain one more electron to fill their outer shell.

Front

What happens to the number of valence electrons as you move from left to right across a period?

Back

The number of valence electrons increases from left to right across a period.

Front

What is the electron configuration of elements in Group 18?

Back

The outer electron shell of elements in Group 18 is full.

Front

Which elements are likely to react with each other?

Back

Elements that have a tendency to gain or lose electrons, such as metals and nonmetals, are likely to react.

Front

What is the significance of the periodic table's groups?

Back

Elements in the same group have similar chemical properties and the same number of valence electrons.

Front

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

Back

Reactivity of metals increases as you move down a group in the periodic table.

Front

What is the general trend of reactivity in nonmetals as you move down a group?

Back

Reactivity of nonmetals decreases as you move down a group in the periodic table.