What is the atomic number of Selenium?

The atomic number of Selenium (Se) is 34.

What is the atomic mass of Selenium?

The atomic mass of Selenium is 78.971 atomic mass units (u).

What group and period is Selenium in?

Selenium is in period 4, group 16 of the periodic table. It is a nonmetal element in the p-block.

How many valence electrons does Selenium have?

Selenium has 6 valence electron(s).

Selenium (Se) — Atomic Number 34 | Soren Periodic Table

Q: What is the electron configuration of Selenium?

The electron configuration of Selenium is [Ar] 3d10 4s2 4p4.

Selenium (Se) — Atomic Number 34Essential trace mineral, used in photocells.Selenium Properties

Atomic Number: 34

Symbol: Se

Atomic Mass: 78.971 u

Category: nonmetal

Group: 16

Period: 4

Block: p-block

Electron Configuration: [Ar] 3d10 4s2 4p4

Valence Electrons: 6

Electronegativity: 2.55

Ionization Energy: 941.0 kJ/mol

Electron Affinity: 195.0 kJ/mol

Atomic Radius: 103.0 pm

Melting Point: 494.0 K

Boiling Point: 958.0 K

Selenium in the Periodic TableSelenium is a nonmetal element located in period 4, group 16 of the periodic table. It has the chemical symbol Se and atomic number 34. The electron configuration of Selenium is [Ar] 3d10 4s2 4p4, giving it 6 valence electron(s).Interactive Selenium LearningExplore Selenium in interactive 3D with the Soren Periodic Table. View Bohr model, quantum orbital model, nucleus inspector, and phase lab with temperature and pressure controls. Includes fun facts, real-world uses, and NCTB curriculum integration for Bangladeshi students.