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Electronic Configuration of First 30 Elements

The electronic configuration of atoms is written in a sequence using subshell labels (s, p, d, f) with the number of electrons in each subshell indicated in superscript. Below is the table for the first 30 elements with their respective electronic configurations.

Atomic NumberName of the ElementElectronic Configuration
1Hydrogen (H)1s1
2Helium (He)1s2
3Lithium (Li)[He] 2s1
4Beryllium (Be)[He] 2s2
5Boron (B)[He] 2s2 2p1
6Carbon (C)[He] 2s2 2p2
7Nitrogen (N)[He] 2s2 2p3
8Oxygen (O)[He] 2s2 2p4
9Fluorine (F)[He] 2s2 2p5
10Neon (Ne)[He] 2s2 2p6
11Sodium (Na)[Ne] 3s1
12Magnesium (Mg)[Ne] 3s2
13Aluminium (Al)[Ne] 3s2 3p1
14Silicon (Si)[Ne] 3s2 3p2
15Phosphorus (P)[Ne] 3s2 3p3
16Sulphur (S)[Ne] 3s2 3p4
17Chlorine (Cl)[Ne] 3s2 3p5
18Argon (Ar)[Ne] 3s2 3p6
19Potassium (K)[Ar] 4s1
20Calcium (Ca)[Ar] 4s2
21Scandium (Sc)[Ar] 3d1 4s2
22Titanium (Ti)[Ar] 3d2 4s2
23Vanadium (V)[Ar] 3d3 4s2
24Chromium (Cr)[Ar] 3d5 4s1
25Manganese (Mn)[Ar] 3d5 4s2
26Iron (Fe)[Ar] 3d6 4s2
27Cobalt (Co)[Ar] 3d7 4s2
28Nickel (Ni)[Ar] 3d8 4s2
29Copper (Cu)[Ar] 3d10 4s1
30Zinc (Zn)[Ar] 3d10 4s2

FAQs

What is the significance of the order in electronic configurations?2024-08-03T20:20:41+05:30

The order in electronic configurations follows the Aufbau principle, which states that electrons occupy the lowest energy orbitals first. This order determines the chemical properties and reactivity of the elements.

Why are there different subshell labels (s, p, d, f)?2024-08-03T20:20:22+05:30

The subshell labels (s, p, d, f) represent different types of atomic orbitals that vary in shape and energy levels. Each subshell can hold a different maximum number of electrons: s (2), p (6), d (10), and f (14).

How do you write the electronic configuration using noble gases?2024-08-03T20:20:03+05:30

The electronic configuration can be written using the nearest noble gas as a prefix. For example, the electronic configuration of sodium (Na) can be written as [Ne] 3s1, where [Ne] represents the configuration of neon.

What is the electronic configuration of an element?2024-08-03T20:19:22+05:30

The electronic configuration of an element describes the distribution of electrons in its atomic orbitals. It is written using the subshell labels (s, p, d, f) and the number of electrons in each subshell as superscripts.

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