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Flashcards in Periodic Table Of Elements Deck (30):
0

A pattern of recurring properties is a what?

Periodicity

1

What is the number of protons in each nucleus of each atom?

Atomic number

2

What are the vertical columns of the periodic table of elements?

Groups

3

What are the horizontal rows of the periodic table of elements?

Period

4

What is a set of elements with similar properties?

Family

5

Which is the most chemically active metals?

Alkali metals

6

Which are the most reactive nonmetals.

Halogens

7

Which are the least reactive elements?

Noble gases

8

A complete s and p sub level in the highest occupied energy level is called...

Stable octet

9

The s-block elements in Group 1A are called...

Alkali metals

10

A very reactive Group VIIA nonmetals with one electron short of a stable octet known as....

Halogens

11

Which elements are in Group IIIB through IIB, that are also called d-block elements?

Transition elements

12

Name Group VIIIA elements with a stable octet or duet.

Noble gases

13

The s-block elements in Group IIA is called....

Alkaline-earth metals

14

Elements with both metal and nonmetal properties, also called semi metals are called....

Metalloid

15

Who published the first Periodic Table of elements?

Mendeleev

16

Where was the location of the First International Congress of Chemists?

Karlsruhe

17

Who proposed the law of octaves?

Newlands

18

Who organized the elements into triads?

Döbereiner

19

Who presented a new method for determining atomic masses?

Cannizzaro

20

Who determined the positive charge of an atom?

Moseley

21

_________ are the electrons in the outermost energy level and are responsible for the ___________ of an element.

Valence electrons; physical properties

22

Inner elections do not have great effect on chemical properties because they rarely...

...come in contact with the atom's environment.

23

The metalloid include the elements boron, silicon, ___________, arsenic, selenium, antimony, and __________.

Germanium; tellurium

24

Henry Morse used X-ray diffraction to determine the amount of ___________ in the nucleus of each atom.

Positive charge

25

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.

Mass; number

26

No two electrons in the same at can have the same four quantum numbers.

Pauli exclusion principle

27

An electron occupies the lowest energy orbital that can receive it.

Aufbau principle

28

The orbitals of equal energy are each occupied by one electron before any is occupied by a second electron.

Hund's rule

29

The physical and chemical properties of the elements are periodic functions of their atomic numbers.

Periodic law