What element has 7 shells and 7 valence electrons?

The element with 7 shells and 7 valence electrons is nitrogen. Nitrogen is a non-metallic chemical element with the atomic number 7 and symbol N. It is an essential component of amino acids, proteins, and nucleic acids, making it crucial for life on Earth.

Nitrogen typically forms three covalent bonds with other atoms, as it has 5 electrons in its outer shell and requires 3 more to achieve a stable octet configuration. Its properties contribute to its widespread industrial applications, such as in fertilizers, explosives, and refrigerants.

In chemistry, the arrangement of electrons in an atom plays a crucial role in determining its properties and behavior. Understanding the electron configuration of an element helps us predict its reactivity and chemical bonding. In this article, we will explore which element has 7 shells and 7 valence electrons.

What are Shells and Valence Electrons?

Before we dive into the element with the specific electron configuration, let’s clarify what shells and valence electrons are.

In an atom, electrons occupy energy levels called shells. Each shell can hold a specific number of electrons. The innermost shell, known as the first shell or K-shell, can hold a maximum of 2 electrons. The second shell or L-shell can hold up to 8 electrons, and so on. The number of shells an atom has is determined by its atomic number.

Valence electrons, on the other hand, are the electrons present in the outermost shell (also known as the valence shell) of an atom. These electrons are involved in chemical reactions and determine an element’s reactivity and ability to form bonds with other atoms.

The Element with 7 Shells and 7 Valence Electrons

The element that meets the criteria of having 7 shells and 7 valence electrons is Uranium Uranium is a chemical element with the atomic number 92, meaning it has 92 electrons surrounding its nucleus. The electron configuration of uranium is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f3 6d1.

As we can see, uranium has 7 occupied electron shells(K, L, M, N, O, P, and Q shells) and 7 valence electrons in its 7th (Q) shell The remaining electrons are distributed among the other shells based on the Aufbau principle, which states that electrons occupy the lowest available energy levels before filling higher levels.

Uranium’s Properties and Relevance

Uranium is a silvery-white, radioactive metal that belongs to the actinide series of elements. It is relatively abundant in the Earth’s crust and has several isotopes, with uranium-238 being the most common. The atomic mass of uranium is approximately 238 atomic units.

Due to its large number of valence electrons, uranium exhibits a variety of oxidation states. It commonly forms compounds such as uranium dioxide (UO2), uranium hexafluoride (UF6), and various uranium salts. These compounds have applications in nuclear power, where uranium is used as a fuel for nuclear reactors.

Uranium’s ability to undergo nuclear fission, a process in which atomic nuclei split into smaller fragments, makes it a valuable resource for generating sustainable energy. It plays a crucial role in both nuclear power generation and the production of nuclear weapons. However, it is important to handle uranium and its compounds with caution due to their radioactive nature.

The element with 7 shells and 7 valence electrons is Uranium Understanding the electron configuration of an element provides insights into its chemical behavior and properties. Uranium, with its numerous valence electrons and associated isotopes, holds significant importance in nuclear power generation and has several practical applications. As we explore the periodic table, we continue to uncover fascinating facts about the elements that compose our world.

The element with 7 shells and 7 valence electrons is likely to be iodine (I). The number of shells in an atom corresponds to the period it belongs to in the periodic table, while the number of valence electrons determines its chemical properties and reactivity.

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