
What is the ground-state electronic configuration of .
Answer
451.8k+ views
Hint: Selenium is a chemical element with the symbol and atomic number . It's a nonmetal (rarely referred to as a metalloid) with properties that fall somewhere between sulfur and tellurium in the periodic table, as well as arsenic. In the Earth's crust, it is rarely found in its elemental form or as pure ore compounds. Selenium is present in metal sulfide ores, where it replaces sulfur to some extent. Selenium is produced commercially as a byproduct of the processing of these ores, most often during harvest.
Complete step by step answer:
Electronic Configuration of Selenium:
Since, the atomic number of Selenium is . So, Selenium atoms have electrons in the ground state and the electronic shell structure is .
So, electrons of the selenium atoms will be filled according to the diagonal rule and Aufbau principle.
According to the Aufbau principle, electrons occupy the lowest energy orbitals first, then the higher energy orbitals.
Diagonal rule – Electrons will be filled in these subshells according to the arrangement given below
where the maximum amount of electron each subshell can have is
According to the rules shown above, firstly electrons will be filled in subshell, then electrons will be filled in subshell and so on.
So, the electronic configuration of Selenium atom in ground state is
Note:
If the energy of an atom is increased, an electron in the atom gets excited and hence the number of electrons increases. To go back to its ground state, the electron releases energy, and the electrons gained for the excited state.
Complete step by step answer:
Electronic Configuration of Selenium:
Since, the atomic number of Selenium is
So, electrons of the selenium atoms will be filled according to the diagonal rule and Aufbau principle.
According to the Aufbau principle, electrons occupy the lowest energy orbitals first, then the higher energy orbitals.
Diagonal rule – Electrons will be filled in these subshells according to the arrangement given below

where the maximum amount of electron each subshell can have is
According to the rules shown above, firstly
So, the electronic configuration of Selenium atom in ground state is
Note:
If the energy of an atom is increased, an electron in the atom gets excited and hence the number of electrons increases. To go back to its ground state, the electron releases energy, and the electrons gained for the excited state.
Latest Vedantu courses for you
Grade 10 | CBSE | SCHOOL | English
Vedantu 10 CBSE Pro Course - (2025-26)
School Full course for CBSE students
₹37,300 per year
Recently Updated Pages
Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Master Class 11 English: Engaging Questions & Answers for Success

Master Class 11 Maths: Engaging Questions & Answers for Success

Trending doubts
Which one is a true fish A Jellyfish B Starfish C Dogfish class 11 biology CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells

1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

How much is 23 kg in pounds class 11 chemistry CBSE

Net gain of ATP in glycolysis a 6 b 2 c 4 d 8 class 11 biology CBSE
