The Periodic Table and Bonding

The Periodic Table and Bonding

Bonding

• When elements chemically combine to form compounds, they either lose, share, or gain electrons.

• Metals LOSE electrons (+ ions)

• Metalloids (and elements near them on the periodic table) typically SHARE electrons

• Nonmetals GAIN electrons (^_ ions)

Bonding

• Whenever you have an electron pair from 2 separate elements, it creates an attraction that bonds the atoms together to form a compound.

Multiple Choice

In the periodic table, the number of valence electrons in each element DECREASES from left to right across each period.

• True

• False

Multiple Choice

Atoms tend to be stable and nonreactive if they have ______ valence electrons.

• 2

• 4

• 6

• 8

Multiple Choice

Which group of elements on the periodic table is composed gases that easily react with metals?

• alkali metals

• alkaline earth metals

• halogens

• noble gases

Multiple Choice

Which group of elements on the periodic table is composed of super reactive metals?

• alkali metals

• alkaline earth metals

• halogens

• noble gases

Multiple Choice

The reactivity of a NONMETAL depends on how easily it _______ valence electrons.

• loses

• gains

• shares

Multiple Choice

The reactivity of a METAL depends on how easily it _______ its valence electrons.

• loses

• gains

• shares

Multiple Choice

When an atom loses an electron, it becomes a __________, and when an atom gains an electron, it becomes a __________.

• positive ion, negative ion

• negative ion, positive ion

• neutral ion, positive ion

• neutral atom, negative ion

Multiple Choice

A(n) ____________ ______________ is the force of attraction that holds atoms together based on the arrangement of electrons between them.

• electron cloud

• chemical bond

• positive charge

• negative charge