Question

Which of the following phrases describes core electrons ?
A. Electrons that are involved in chemical reactions
B. Electrons that determine an atoms properties
C. Electrons that are farthest from the nucleus
D. Electrons that are closest to the nucleus

Answer 1

Answer:

D, Electrons are closest to the nucleus

Explanation:

Answer 2

In an atom, core electrons are those that are closest to the nucleus.

In an atom, we can identify:

• Core electrons: these are internal electrons, closer to the nucleus

• Valence electrons: these are external electrons, in the outermost electron shell.

Let's consider which of the following phrases describes core electrons.

A. Electrons that are involved in chemical reactions. FALSE. Valence electrons are involved in chemical reactions.

B. Electrons that determine an atom's properties. FALSE. Valence electrons determine an atom's properties.

C. Electrons that are farthest from the nucleus. FALSE. Valence electrons are farthest from the nucleus.

D. Electrons that are closest to the nucleus. TRUE. Core electrons are closest to the nucleus.

In an atom, core electrons are those that are closest to the nucleus.

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