What is Mendel's Periodic Law?

• Mendel's Periodic Law describes the arrangement of elements based on their mass.

• Mendel's Periodic Law describes the periodicity of element properties based on atomic numbers.

• Mendel's Periodic Law is about the inheritance of traits in plants.

• Mendel's Periodic Law states that all elements have the same properties.

How does the Modern Periodic Table differ from Mendel's?

• The Modern Periodic Table was created in the 18th century, while Mendeleev's was created in the 19th century.

• The Modern Periodic Table is based on chemical properties, while Mendeleev's was based on physical properties.

• The Modern Periodic Table is organized by atomic number, while Mendeleev's was organized by atomic mass.

• The Modern Periodic Table includes only metals, while Mendeleev's included both metals and nonmetals.

What is the subshell electron configuration for Carbon?

• 1s² 2s² 2p¹

• 1s² 2s² 2p²

• 1s² 2s¹ 2p²

• 1s² 2s² 2p⁴

According to the Aufbau principle, which subshell is filled first?

• 4d

• 2s

• 3p

• 1s

How does atomic size change across a period?

• Atomic size fluctuates randomly across a period.

• Atomic size remains constant across a period.

• Atomic size increases across a period.

• Atomic size decreases across a period.

What is the trend of atomic size down a group?

• Atomic size increases down a group.

• Atomic size fluctuates down a group.

• Atomic size decreases down a group.

• Atomic size remains constant down a group.

Which element has the highest electropositivity?

• Sodium (Na)

• Lithium (Li)

• Potassium (K)

• Hydrogen (H)

What is the electron configuration of Sodium?

• 1s² 2s² 2p⁶ 3p¹

• 1s² 2s² 2p⁶ 3s¹

• 1s² 2s² 3p⁶

• 1s² 2s² 2p⁶ 3s²

How does the atomic radius of Chlorine compare to that of Fluorine?

• Chlorine and Fluorine have the same atomic radius.

• Fluorine has a larger atomic radius than Chlorine.

• Chlorine has a larger atomic radius than Fluorine.

• Chlorine has a smaller atomic radius than Fluorine.

What is the valency of Oxygen?

• 4

• 3

• 1

• 2