Chemistry

A colored ion generally indicates a _________________.

(transitional) metal

Elements of Group 1 are called ____________.

Alkali metals

Elements of Group 2 are called _____________.

Alkaline-earth metals

The most active element in Group 17 is ___________.

Fluorine

Where are the most active metals located?

Group 1 (alkali metals)

Where are the most active nonmetals located?

Group 17 (halogens)

Where is the highest electronegativity found?

Group 17 (halogens)

Where is the lowest electronegativity found?

Groups 1 and 2 (alkali and alkaline earth metals)

Group 17 elements are called ___________.

Halogens

Group 18 elements are called ______________.

Noble Gases

Elements of Group 3-12 are called _______________.

Transition metals

Elements across a series have the same number of _________________.

atomic energy levels

Elements in the periodic table are arranged according to their ______________.

atomic number

What sublevels are filing across the Transition Elements?

d and f

As you go down a group, the first ionization energy generally ___________. Why?

decreases; more electrons are between the nucleus and the valence electrons

As you go from left to right across a period, the atomic size ____________. Why?

decreases; the increasing positive charge of the nucleus pulls electrons closer.

As you travel down a group, the atomic size ___________. Why?

increases; the electrons are occupying sublevels in successively higher main energy levels

As you go from left to right across a period, the first ionization energy generally _____________. Why?

increases; the increasing nuclear charge, a higher charge more strongly attracts electrons in the same energy level

A negative ion is ____________ than its parent atom.

larger

An element with both metallic and nonmetallic properties is called a __________.

metalloid

The majority of elements in the periodic table are __________.

metals

As you go from left to right across the periodic table, the elements go from _______________ to _______________.

metals, nonmetals

As you go down a group, the elemetns generally become ____________ metallic.

more

A positive ion is _____________ than its parent atom.

smaller

Elements within a group have a similar number of _______________.

valence electrons