Formula Explanation
Atomic number lookup = exact element match
This calculator applies the formula Atomic number lookup = exact element match. Enter each value with the matching unit, and AZCalculate updates the result instantly.
Chemistry
Atomic Number Lookup
Use this atomic number lookup to calculate find an element by atomic number and view its symbol, mass, group, period, and category.
atomic number lookupatomic number 26atomic number 79
Calculator
Calculate instantly
Periodic Table Search
Element result
K
Potassium
Atomic number
19
Atomic mass
39.0983 u
Group
1
Period
4
Block
s-block
Phase at room temp
solid
Potassium is a soft alkali metal and an essential electrolyte in living organisms.
Atomic data
Electron configuration
[Ar] 4s1
Electronegativity
0.82
Density
0.862 g/cm3
Melting point
336.53 K
Boiling point
1032 K
Discovered by
Humphry Davy
Year discovered
1807
Common uses
Fertilizers, Glass, Soaps, Biological electrolytes
Temperature behavior
Celsius
25 C
Fahrenheit
77 F
Kelvin
298.15 K
At this temperature, Potassium is expected to be solid.
Melting point: 336.53 K
Boiling point: 1032 K
Physical state estimates are based on standard pressure and may change under different pressure conditions.
Full periodic table
Lanthanides
Actinides
Sign in to save this calculation and access it later.
Use Cases
- Find elements from atomic numbers
- Check periodic table position
- Study element order
Step-by-Step Explanation
- Step 1Enter the known values in the calculator fields.
- Step 2Keep the units consistent with the labels shown beside each input.
- Step 3Apply the formula: Atomic number lookup = exact element match.
- Step 4Review the primary result and supporting values.
Example calculation
Example atomic number lookup
Given
- Atomic number: 26
Steps
- Use the values shown above.
- Apply Atomic number lookup = exact element match.
Result
The calculator above shows the computed answer instantly from these example values.
Calculator guide
About this Atomic Number Lookup
Find an element by atomic number and view its symbol, mass, group, period, and category. This page includes an interactive calculator, concise formula notes, worked examples, FAQs, related calculators, and practical guidance you can revisit whenever needed.
Found something that does not look right?
We work hard to keep every calculator accurate and useful. If you notice a calculation error, missing option, or unclear explanation, please let us know so we can review and correct it promptly.
Calculator usage
See how many people are using this calculator.
Total visits today
0
Live users now
0
Total saved calculations
0
Most active date
2026-06-05
FAQ
Atomic Number Lookup FAQs
How does the atomic number lookup work?+
It uses Atomic number lookup = exact element match and calculates the result from the values you enter.
Can I copy or print the result?+
Yes. AZCalculate calculator pages include copy, share, and print actions.
Related tools
Related Calculators
Search elements by name, symbol, atomic number, or approximate atomic mass, then view atomic data and temperature state estimates.
Popular
Chemistry
Find an element from its name, symbol, atomic number, or approximate atomic mass.
Popular
Chemistry
Find full element names and atomic data from element symbols such as K, Fe, or Au.
Chemistry
Look up atomic weight and nearest matching elements by approximate atomic mass.
Chemistry
Calculate approximate molecular weight from element masses and atom counts.
Chemistry
Calculate moles from mass and molar mass.