Chemical Properties of Representative Elements

For representative elements in the periodic table, what determines their chemical properties?

• Their atomic mass

• The number of protons

• The number of valence electrons

• The period number

Where are valence electrons located in an atom?

• In the nucleus

• In the innermost energy level

• In the outermost energy level

• In the d-orbitals

What does the group number of representative elements indicate?

• The number of protons

• The number of neutrons

• The number of electron shells

• The number of valence electrons

How many valence electrons does an element in Group 2A (2) have?

• 1

• 2

• 3

• 4

Which group number corresponds to elements with 6 valence electrons?

• 4A (14)

• 5A (15)

• 6A (16)

• 7A (17)

What is the number of valence electrons for elements in Group 1A (1)?

• 1

• 2

• 3

• 4

Elements in which group have 7 valence electrons?

• 5A (15)

• 6A (16)

• 7A (17)

• 8A (18)

How many valence electrons are present in elements of Group 3A (13)?

• 2

• 3

• 4

• 5

Electron-dot symbols are also known as what?

• Bohr models

• Lewis structures

• Dalton diagrams

• Rutherford schematics

What do electron-dot symbols represent?

• The total number of electrons in an atom

• The atomic number of an element

• The valence electrons as dots placed on the sides of a symbol

• The number of protons in the nucleus