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allotropes Some elements exist in several various structural forms, dubbed allotropes. Each allotrope has various physical properties.

You are watching: Sulfur 25 protons, neutrons electrons

For an ext information top top the Visual aspects image watch the Uses and properties section below.

Discovery day prehistoric
found by -
origin of the name The surname is derived either from the Sanskrit "sulvere", or the Latin "sulfurium".
Allotropes α-S (orthorhombic), β-S (monoclinic), S2, S3, cyclo-S8


GroupA vertical tower in the routine table. Members the a group typically have comparable properties and also electron configurations in their external shell.

PeriodA horizontal row in the routine table. The atomic variety of each aspect increases by one, analysis from left to right.

BlockElements room organised right into blocks through the orbital type in which the external electrons room found. These blocks are named for the characteristics spectra lock produce: spicy (s), primary (p), diffuse (d), and an essential (f).

Atomic numberThe number of protons in an atom.

Electron configurationThe arrangements of electrons above the last (closed shell) noble gas.

Melting pointThe temperature in ~ which the solid–liquid phase readjust occurs.

Boiling point The temperature in ~ which the lpg phase adjust occurs.

SublimationThe transition of a substance straight from the solid to the gas phase without passing with a fluid phase.

Density (g cm−3)Density is the massive of a problem that would fill 1 cm3 at room temperature.

Relative atomic massThe massive of an atom loved one to that of carbon-12. This is about the sum of the number of protons and also neutrons in the nucleus. Where an ext than one isotope exists, the value provided is the abundance weight average.

IsotopesAtoms of the same facet with different numbers of neutrons.

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CAS numberThe chemistry Abstracts company registry number is a distinct identifier the a particular chemical, design to stop confusion arising from various languages and also naming systems.