Lesson Check - Electrons Conf of Ions(2024-2025)

Front

What is the electron configuration of a neutral calcium atom (Ca)?

Back

1s2 2s2 2p6 3s2 3p6 4s2

Front

What happens to the electron configuration of an atom when it loses two electrons?

Back

The atom's electron configuration will have two fewer electrons than its neutral state.

Front

What is the electron configuration of Ca⁺²?

Back

1s2 2s2 2p6 3s2 3p6

Front

What is the charge of an atom that has gained one electron?

Back

-1

Front

What is the charge of an atom that has lost one electron?

Back

+1

Front

What does isoelectronic mean?

Back

Isoelectronic refers to different atoms or ions that have the same number of electrons.

Front

Which ions are isoelectronic with neon?

Back

O^2-, F^-, Na⁺ are all isoelectronic with neon.

Front

What is the electron configuration for an atom with 5 electrons?

Back

1s2 2s2 2p¹.

Front

How does the electron configuration of an anion differ from that of its neutral atom?

Back

An anion has additional electrons compared to its neutral atom.

Front

What is the electron configuration for an atom with 3 valence electrons?

Back

1s2 2s2 2p¹.