periodic_table: Data on the elements of the periodic table

In ismayc/chemistr: Facilitates use of R functions and R Markdown files for Chemistry lab reports

Data on the elements of the periodic table

Description

Different characteristics about the 118 chemical elements as of August 2016.

Usage

data(periodic_table)

Format

A data frame with 118 observations (elements) on the following variables.

• atomic_number an integer giving the number of protons found in the nucleus of an atom for each element

• symbol A character string of length 1, 2, or 3 characters giving the symbol of the chemical element

• name A character string giving the name of the element

• name_origin Multiple character strings giving a brief summary of the origin of the name of the element

• group An integer from 1 to 18 giving the family for a column of elements

• period An integer giving the horizontal row in the periodic table

• block A character (either "s", "f", "d", or "p") corresponding to the characteristic orbital

• state_at_stp A character string (either "Gas", "Liquid", or "Solid") giving the element's state at Standard Temperature and Pressure

• occurrence A character string denoting when current forms of the element in nature came about (either "Primordial", "Synthetic", or "Transient")

• description A character string denoting which subcategory of metal-nonmetal trend the element corresponds to)

• atomic_weight A numerical value giving the ratio of the average mass of atoms of an element (from a single given sample or source) to 1⁄12 of the mass of an atom of carbon-12. Measured in unified atomic mass units.)

• aw_uncertainty An integer value giving a measure of uncertainity (if one given) for the atomic weight of an element

• any_stable_nuclides If "No", the element does not have any stable nuclides, and the reported atomic_weight indicates the mass number of the longest-lived isotope of the element. If "Yes", the element does have stable nuclides and the atomic_weight reflects this.

• density A numeric value giving the mass per unit volume of the element. Measured in grams per cubic centimeter.

• density_predicted If TRUE, the element likely has a short half-life and so the value of density is not precisely measured, but predicted instead.

• melting_point A numeric value for solid elements giving the Kelvin temperature at which it changes state from solid to liquid at atmospheric pressure.

• mp_predicted If TRUE, the element likely has a short half-life and so the value of melting_point is not precisely measured, but predicted instead.

• boiling_point A numeric value giving the kelvin temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor

• bp_predicted If TRUE, the element likely has a short half-life and so the value of boiling_point is not precisely measured, but predicted instead.

• heat_capacity A numeric value giving the ratio of the head added (or removed from) an element to the resulting temperature change. Measured in joule per gram kelvin.

• electronegativity A numeric value describing the tendency of an atom or a functional group to attract electrons (or electron density) towards itself.

• abundance A numeric value giving the abundance of the element in Earth's crust. Measured in milligrams per kilogram.

Details

This data was collected via web scraping and cleaning the wiki page and also combining columns from the elements data frame in the rfordummies package. Note that there are many missing values in this data set usually due to measurements not being available for that element.

Source

https://en.wikipedia.org/wiki/List_of_chemical_elements

Examples

data(periodic_table, package = "chemistr")

ismayc/chemistr documentation built on Feb. 4, 2023, 12:44 p.m.