Use the periodic table to determine the element corresponding to each electron configuration. d. [Kr] 5s²4d¹⁰5p³

검증된 단계별 안내

Identify the noble gas core in the electron configuration, which is [Kr] in this case.

Recognize that [Kr] represents the electron configuration of Krypton, which accounts for the first 36 electrons.

Add the electrons from the remaining configuration: 5s^2, 4d^10, and 5p^3.

Calculate the total number of electrons by adding the electrons from the noble gas core and the additional electrons: 36 (from [Kr]) + 2 (from 5s^2) + 10 (from 4d^10) + 3 (from 5p^3).

Use the periodic table to find the element with the atomic number equal to the total number of electrons calculated.

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주요 개념

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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 before higher-energy ones. The notation includes the principal quantum number, subshell type, and the number of electrons in each subshell, providing insight into the atom's chemical properties and reactivity.

Periodic Table

The periodic table organizes elements based on their atomic number, electron configurations, and recurring chemical properties. Elements are arranged in rows (periods) and columns (groups), with similar properties found in the same group. Understanding the periodic table is essential for predicting element behavior and identifying elements based on their electron configurations.

Noble Gas Notation

Noble gas notation is a shorthand method for writing electron configurations, using the nearest noble gas to represent core electrons. This simplifies the representation of electron configurations by focusing on the valence electrons, which are crucial for determining an element's chemical behavior. In the given configuration, [Kr] indicates that the configuration starts from the noble gas krypton.

Use the periodic table to determine the element corresponding to each electron configuration. d. [Kr] 5s24d105p3