Write the electron configurations for the following ions, and determine which have noble-gas configurations.
a. Ru3+
b. As3−
c. Y3+
d. Pd2+
e. Pb2+
f. Au3+

검증된 단계별 안내

Step 1: Determine the electron configuration of the neutral atom for each element. This involves knowing the atomic number and filling the orbitals according to the Aufbau principle, Hund's rule, and the Pauli exclusion principle.

Step 2: For each ion, adjust the electron configuration by adding or removing electrons. For cations (positive ions), remove electrons starting from the outermost shell. For anions (negative ions), add electrons to the outermost shell.

Step 3: Write the electron configuration for each ion after adjusting for the gain or loss of electrons. Use the noble gas shorthand notation where applicable.

Step 4: Compare the electron configuration of each ion to the nearest noble gas configuration. Noble gases have full outer electron shells, typically ending in s²p⁶.

Step 5: Identify which ions have achieved a noble-gas configuration by having a full outer shell similar to that of a noble gas. This typically means having the same electron configuration as one of the noble gases.>

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Electron Configuration

Electron configuration describes the distribution of electrons in an atom's orbitals. It follows the Aufbau principle, which states that electrons fill lower-energy orbitals first, and is represented using a notation that indicates the energy levels and sublevels occupied by electrons. Understanding electron configurations is essential for predicting chemical behavior and reactivity.

Ionic Charge and Electron Loss/Gain

Ionic charge refers to the net electrical charge an atom has after losing or gaining electrons. Cations are positively charged ions formed by the loss of electrons, while anions are negatively charged ions formed by the gain of electrons. The charge of an ion directly influences its electron configuration, as it alters the number of electrons present compared to the neutral atom.

Noble Gas Configuration

Noble gas configuration refers to an electron arrangement that mirrors that of the nearest noble gas, characterized by a full outer electron shell. Atoms or ions with noble gas configurations are generally more stable and less reactive. Identifying whether an ion has a noble gas configuration helps in understanding its stability and potential chemical behavior.

Write the electron configurations for the following ions, and determine which have noble-gas configurations.a. Ru3+b. As3−c. Y3+d. Pd2+e. Pb2+f. Au3+