Valence and Core Electrons Concepts

The video tutorial explains the difference between core and valence electrons. Core electrons are located in the innermost shells and do not participate in bonding, but they influence an atom's reactivity. More core electrons result in a larger atomic radius, causing valence electrons to be further from the nucleus, reducing the effective nuclear charge and making them easier to lose. The tutorial also highlights the distinction between valence and core electrons, emphasizing their roles in chemical reactions and atomic properties.

What are core electrons primarily known for?

• Participating in bonding

• Not participating in bonding

• Having no effect on reactivity

• Being in the outermost shell

How do core electrons influence the atomic radius?

• They make the atomic radius unstable

• They increase the atomic radius

• They have no effect on the atomic radius

• They decrease the atomic radius

What happens to valence electrons when there are more core electrons?

• They gain more energy

• They are further from the nucleus

• They move closer to the nucleus

• They become more stable

Which electrons are involved in chemical reactions?

• Core electrons

• Valence electrons

• Neither core nor valence electrons

• Both core and valence electrons

What is the primary role of valence electrons?

• To occupy the innermost shell

• To participate in bonding and reactions

• To increase atomic radius

• To decrease atomic radius

How do core electrons affect an atom's chemical reactivity?

• They decrease reactivity

• They have no effect

• They increase reactivity

• They influence reactivity without participating in bonding

What is the relationship between core electrons and effective nuclear charge?

• Core electrons stabilize nuclear charge

• Core electrons have no effect on nuclear charge

• More core electrons increase effective nuclear charge

• More core electrons decrease effective nuclear charge

What is another term for effective nuclear charge?

• Valence charge

• Core charge

• Atomic radius

• Zeph

What happens to valence electrons when they are further from the nucleus?

• They are more easily lost

• They become more tightly bound

• They gain more energy

• They become less reactive