In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present). The number of protons determines how many electrons surround the nucleus, and it is the arrangement of these electrons that determines most of the chemical behavior of an element.

In a periodic table arranged in order of increasing atomic number, elements having similar chemical properties naturally line up in the same column (group). For instance, all of the elements in Group 1A are relatively soft metals, react violently with water, and form 1+ charges; all of the elements in Group 8A are unreactive, monatomic gases at room temperature, etc. In other words, there is a periodic repetition of the properties of the chemical elements with increasing mass.

Phosphorus (atomic number 15, symbol P) is a non-metal with a monoclinic structure and 3 main allotropes - black, red, and white. It has 3 oxidation states - 5, 4, 3 and is a multivalent non-mental. The element occurs in the form of phosphates, as organophosphates, and in minerals. Atomic Number of Phosphorus Atomic Number of Phosphorus is 15. Chemical symbol for Phosphorus is P. Number of protons in Phosphorus is 15. Atomic weight of Phosphorus is 30.973762 u or g/mol. Melting point of Phosphorus is 44 (P4) °C and its the boiling point is 280 (P4) °C. 15 P Phosphorus 98. Atomic Number: 15. Atomic Weight: 98. Melting Point: 317.30 K (44.15°C or 111.47°F) Boiling Point: 553.65 K (280.5°C or 536.9°F) Density: 1.82 grams per cubic centimeter. Phase at Room Temperature: Solid. Element Classification: Non-metal. Period Number: 3. Group Number: 15. Group Name: Pnictogen. What's in a name?

In the original periodic table published by Dimitri Mendeleev in 1869, the elements were arranged according to increasing atomic mass— at that time, the nucleus had not yet been discovered, and there was no understanding at all of the interior structure of the atom, so atomic mass was the only guide to use. Once the structure of the nucleus was understood, it became clear that it was the atomic number that governed the properties of the elements.

Atomic Number of Phosphorus is 15.

Chemical symbol for Phosphorus is P. Number of protons in Phosphorus is 15. Atomic weight of Phosphorus is 30.973762 u or g/mol. Melting point of Phosphorus is 44 (P4) °C and its the boiling point is 280 (P4) °C.

» Boiling Point» Melting Point» Abundant» State at STP» Discovery Year

About Phosphorus

Phosphorus is a chemical element which comes in two forms, red and white one. Red phosphorus is a non-toxic solid which we all have in our kitchens, on the edges of our matchsticks. White phosphorus is highly toxic, and it can cause burns when contacting human skin. This chemical element has got its name after the Greek expression meaning brighter than light since this element glows in the dark by slow ‘burning’ light. This element is crucial for all living things on our planet since it supports energy generating processes. In nature, phosphorus can be found as an element of various compounds like phosphate rocks and other minerals. Industrially, phosphorus and its compounds can be used as fertilizers, steel production, producing detergents, household goods, soft drinks, poison for rodents, and so on.

Properties of Phosphorus Element

Atomic Number (Z)	15
Atomic Symbol	P
Group	15
Period	3
Atomic Weight	30.973762 u
Density	1.82 g/cm3
Melting Point (K)	317.3 K
Melting Point (℃)	44 (P4) °C
Boiling Point (K)	550 K
Boiling Point (℃)	280 (P4) °C
Heat Capacity	0.769 J/g · K
Abundance	1050 mg/kg
State at STP	Solid
Occurrence	Primordial
Description	Non-metal
Electronegativity (Pauling) χ	2.19
Ionization Energy (eV)	10.48669
Atomic Radius	100pm
Covalent Radius	106pm
Van der Waals Radius	180
Valence Electrons	5
Year of Discovery	1669
Discoverer	Brandt

What is the Boiling Point of Phosphorus?

Phosphorus boiling point is 280 (P4) °C. Boiling point of Phosphorus in Kelvin is 550 K.

What is the Melting Point of Phosphorus?

Phosphorus melting point is 44 (P4) °C. Melting point of Phosphorus in Kelvin is 317.3 K.

How Abundant is Phosphorus?

Abundant value of Phosphorus is 1050 mg/kg.

What is the State of Phosphorus at Standard Temperature and Pressure (STP)?

State of Phosphorus is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.

When was Phosphorus Discovered?

Phosphorus was discovered in 1669.

Mass Number Of Phosphorus