Name an element in the fourth period (row) of the periodic table with the following: b. four 4p electrons

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insert step 1> Identify the fourth period (row) of the periodic table.

insert step 2> Recognize that the 4p subshell can hold a maximum of 6 electrons.

insert step 3> Determine that having four 4p electrons means the element is in the 4p^4 configuration.

insert step 4> Locate the element in the fourth period with the electron configuration ending in 4p^4.

insert step 5> Verify that the element with this configuration is Selenium (Se).

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Periodic Table Structure

The periodic table is organized into rows (periods) and columns (groups) based on atomic number and electron configuration. Each period corresponds to the highest energy level of electrons in the atoms of the elements within that row. The fourth period includes elements with atomic numbers 19 to 36, where the 4p subshell begins to fill.

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02:40

Periodic Table Classifications

Electron Configuration

Electron configuration describes the distribution of electrons in an atom's orbitals. For elements in the fourth period, the filling of the 4s and 4p orbitals occurs after the 3d orbitals. An element with four 4p electrons will have an electron configuration that includes the 4p subshell being partially filled, indicating it has four electrons in that subshell.

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Electron Configuration Example

Valence Electrons

Valence electrons are the outermost electrons of an atom and are crucial for determining chemical properties and reactivity. In the context of the fourth period, elements with four 4p electrons will have a total of four valence electrons, influencing their bonding behavior and the types of compounds they can form.

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