【實用教育app】Best Periodic Table|最夯免費app

Hi guys, this is my fourth application, Easy Periodic Tabel. It's one of best periodic table apps for your android. Just 3 words, simple, easy, and complete. Simple because this apps contains a crazy damn simple design, good looking and easy to uderstand because all elements grouped in different colors. This best periodic table is also very easy to use. If you want to know the details of a chemistry element you just have to tab it and a very complete data of that element will be appear in a dinamyc pop up. Just scroll down on it to know more about that element. A lot of information start from the overview, the atomic number, shells, the element name, group, class elements, atomic weights, configurations, valence electrons, atomic radius, ionic radius, ionization energy, boiling point, melting point elements, the history of the discovery of the element, years of discovery, the source of these elements as well as the usability and benefits. This is a sample data of an element in this best periodic table.

Element : Nitrogen

Overview

Name Nitrogen

Symbol N

Atomic Number 7

Period 2

Group 5a

Type Non-Metal

Name Origin Greek: nitron and genes, (soda forming).

Pronounced NYE-treh-gen

Atomic Properties Crystal Structure Hexagonal

Atomic Weight 14,00674

Shells 2,5

Orbitals [He] 2s2 2p3

Valence 3,5

Electronegatifity 3,04

Atomic Radius 0.75 Å

Ionic Radius 1.71 (-3) Å

Covalent Radius 0.75 Å

First Ionization Potential 14.5341 V

Second Ionization Potential 29.601 V

Third Ionization Potential 47.448 V

Oxydation States (±3),5,4,±2,±1

Thermodynamic Properties

Melting Point -209.86°C

Boiling Point -195.8°C

Heat of Vaporization 2.7928 kJ/mol

Heat of Fusion 0.3604 kJ/mol

Specific Heat 1.04 J/gK

Thermal Conductivity 0.0002598 W/cmK

Coeficient of Thermal Expansion 240x 10-6 K-1

Material Properties

Description Colorless, odorless, tasteless, generally inert gas. Fifth most abundant element in the universe. Makes up about 78% of earth's atmosphere.

Density at 293o K 0.0012506 g/cm3

Electrical Conductivity --

Modulus of Elasticity --

History

Discovered By Daniel Rutherford

Year 1772

Location Scotland

Sources

Obtained from liquid air by fractional distillation.

Uses

Primarily to produce ammonia and other fertilizers. Also used in making nitric acid, which is used in explosives. Also used in welding and enhanced oil recovery.

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