3. A sulfur atom has an electronic configuration of [Ne] 3s2 3p3 3d1. What can you tell me about this?
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Configuration of First 30 Elements
Electronic Configuration of First 30 Elements
The standard notation for the indication of the electronic configuration of atoms is written in a sequence of the label names of each atomic subshell with the number of electrons assigned to that specific subshell written in superscript.
These subshells are made up of atomic orbitals. The four subshell labels that are used are s, p, d, and f. The maximum number of electrons allowed in each of these subshells are 2, 6, 10, and 14 respectively.
For example, the names of the subshells in a sulfur atom would be 1s, 2s, 2p, 3s, and 3p (since sulfur has three electron shells). All of these shells are filled except the 3p shell which has four electrons. Therefore, the electronic configuration of sulfur can be written as 1s2 2s2 2p6 3s2 3p4.
The electronic configuration of elements can also be written with the help of noble gases. These noble gases have completely filled outermost shells and can be prefixed to the outermost shell of the element whose electronic configuration must be noted.
For example, the electronic configuration of sulfur can be written as [Ne] 3s2 3p4, since Neon has an electronic configuration of 1s2 2s2 2p6.
Electronic Configuration of First 30 Elements with Atomic Numbers
Given below is a table describing the electronic configuration of first 30 elements with atomic numbers.
Atomic Number Name of the Element Electronic Configuration
1 Hydrogen (H) 1s1
2 Helium (He) 1s2
3 Lithium (Li) [He] 2s1
4 Beryllium (Be) [He] 2s2
5 Boron (B) [He] 2s2 2p1
6 Carbon (C) [He] 2s2 2p2
7 Nitrogen (N) [He] 2s2 2p3
8 Oxygen (O) [He] 2s2 2p4
9 Fluorine (F) [He] 2s2 2p5
10 Neon (Ne) [He] 2s2 2p6
11 Sodium (Na) [Ne] 3s1
12 Magnesium (Mg) [Ne] 3s2
13 Aluminium (Al) [Ne] 3s2 3p1
14 Silicon (Si) [Ne] 3s2 3p2
15 Phosphorus (P) [Ne] 3s2 3p3
16 Sulfur (S) [Ne] 3s2 3p4
17 Chlorine (Cl) [Ne] 3s2 3p5
18 Argon (Ar) [Ne] 3s2 3p6
19 Potassium (K) [Ar] 4s1
20 Calcium (Ca) [Ar] 4s2
21 Scandium (Sc) [Ar] 3d1 4s2
22 Titanium (Ti) [Ar] 3d2 4s2
23 Vanadium (V) [Ar] 3d3 4s2
24 Chromium (Cr) [Ar] 3d5 4s1
25 Manganese (Mn) [Ar] 3d5 4s2
26 Iron (Fe) [Ar] 3d6 4s2
27 Cobalt (Co) [Ar] 3d7 4s2
28 Nickel (Ni) [Ar] 3d8 4s2
29 Copper (Cu) [Ar] 3d10 4s1
30 Zinc (Zn) [Ar] 3d10 4s2Swipe left
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