Exploring Ions and Their Formation

What happens when the number of protons in an atom is changed?

• The atom becomes an ion.

• The atom becomes a different element.

• The atom remains the same.

• The atom becomes an isotope.

What is an ion?

• An atom with a different number of protons and neutrons.

• An atom with a different number of electrons.

• An atom with a different number of neutrons.

• An atom with a different number of protons.

According to the octet rule, how many electrons make an atom stable?

• 2 or 6

• 6 or 8

• 4 or 6

• 2 or 8

Which element's electron configuration is 1s2 2s1?

• Carbon

• Lithium

• Beryllium

• Boron

What is the charge of a lithium ion after it loses one electron?

• Negative one

• Positive two

• Negative two

• Positive one

Why does nitrogen typically gain three electrons to form an ion?

• To lose its valence electrons

• To change its number of protons

• To become an isotope

• To achieve a full valence shell

What does it mean for atoms or ions to be isoelectric?

• They have the same electron configuration.

• They have the same number of neutrons.

• They have the same atomic mass.

• They have the same number of protons.

How many valence electrons do elements in the second period have as you move across the periodic table?

• 2 to 7

• 1 to 8

• 1 to 7

• 2 to 8

What is a cation?

• A positively charged ion

• An isotope

• A negatively charged ion

• A neutral atom

What type of ions are typically formed by nonmetals?

• Isotopes

• Cations

• Anions

• Neutral atoms