Flashcards in Periodic Table Of Elements Deck (30):
A pattern of recurring properties is a what?
What is the number of protons in each nucleus of each atom?
What are the vertical columns of the periodic table of elements?
What are the horizontal rows of the periodic table of elements?
What is a set of elements with similar properties?
Which is the most chemically active metals?
Which are the most reactive nonmetals.
Which are the least reactive elements?
A complete s and p sub level in the highest occupied energy level is called...
The s-block elements in Group 1A are called...
A very reactive Group VIIA nonmetals with one electron short of a stable octet known as....
Which elements are in Group IIIB through IIB, that are also called d-block elements?
Name Group VIIIA elements with a stable octet or duet.
The s-block elements in Group IIA is called....
Elements with both metal and nonmetal properties, also called semi metals are called....
Who published the first Periodic Table of elements?
Where was the location of the First International Congress of Chemists?
Who proposed the law of octaves?
Who organized the elements into triads?
Who presented a new method for determining atomic masses?
Who determined the positive charge of an atom?
_________ are the electrons in the outermost energy level and are responsible for the ___________ of an element.
Valence electrons; physical properties
Inner elections do not have great effect on chemical properties because they rarely...
...come in contact with the atom's environment.
The metalloid include the elements boron, silicon, ___________, arsenic, selenium, antimony, and __________.
Henry Morse used X-ray diffraction to determine the amount of ___________ in the nucleus of each atom.
Mendeleev based his Periodic Table of Elements on the atomic ________ of each element, but the modern Periodic Table is based on the atomic ________ of each element.
No two electrons in the same at can have the same four quantum numbers.
Pauli exclusion principle
An electron occupies the lowest energy orbital that can receive it.
The orbitals of equal energy are each occupied by one electron before any is occupied by a second electron.