Tennessine

UNKNOWN, PROBABLY METALLOID

Bohr Model: Electrons arranged in energy shells around the nucleus.

Tennessine is a superheavy artificial chemical element with an atomic number of 117 and a symbol of Ts. Also known as eka-astatine or element 117, it is the second-heaviest known element and penultimate element of the 7th period of the periodic table. As of 2016, fifteen tennessine atoms have been observed: six when it was first synthesized in 2010, seven in 2012, and two in 2014.

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Quick Facts

Atomic Number 117

Period 7

Group 17

Phase Solid

Appearance Unknown

About Unknown, Probably Metalloids

Metalloids have properties intermediate between metals and nonmetals. They often act as semi-conductors, making them essential for electronics.

History

Discovered By Joint Institute for Nuclear Research

Named By Unknown

Physical Properties

Atomic Mass 294

Density 7.17 g/L

Molar Heat N/A J/(mol·K)

Phase Transition (Melting & Boiling Points)

Tennessine melts at 723 K and boils at 883 K.

Atomic Properties

Electron Config *[Rn] 5f14 6d10 7s2 7p5

Electronegativity N/A

Electron Affinity 165.9 kJ/mol

Ionization Energy N/A kJ/mol

Orbital Filling Diagram

This diagram visualizes electron configuration according to the Aufbau principle and Hund's rule. Boxes represent orbitals (s, p, d, f), while arrows indicate electrons with spin up or down. Electrons fill lower energy levels first and occupy orbitals singly before pairing.

Photograph

Source: Wikipedia

External Resources

Wikipedia PubChem Royal Society of Chemistry Periodic Videos (YouTube)

Study Guide

Atomic Number

The number of protons in the nucleus, which defines the element.

Atomic Mass

The average mass of an atom, including protons and neutrons.

Electronegativity

A measure of how strongly an atom attracts electrons in a bond.

Ionization Energy

The energy required to remove an electron from an atom.

Electron Config

The arrangement of electrons in the atom's energy shells.