CP-Unit Four

Front

As you look from left to right across a period, electronegativity:

Back

increases.

Front

Hydrogen being an exception to the octet rule, needs _____ electrons in its outer energy level to be stable.

Back

2.

Front

How many valence electrons are in an atom of Ar?

Back

8.

Front

Which ion is larger: Cu⁺, Cu²⁺, or Cu³⁺?

Back

Cu⁺.

Front

Which of the following is a metal: Fe, Si, S, or N?

Back

Fe.

Front

What is electronegativity?

Back

The tendency of an atom to attract electrons in a chemical bond.

Front

What is the octet rule?

Back

Atoms tend to gain, lose, or share electrons to have eight electrons in their outer shell.

Front

Define valence electrons.

Back

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

Front

What is the significance of the periodic table in chemistry?

Back

It organizes elements based on their properties and atomic structure.

Front

What is the difference between an anion and a cation?

Back

An anion is a negatively charged ion, while a cation is a positively charged ion.