Vocab 1
Repeating patterns is also referred to as
Periodic
Elements in group 1 are called what?
alkali metals
Identify the period number, Block Designation, and group number of [Ar]3d74s2
Period number: 4
Block designation: D
Group number:9
One-half of the distance between the nucei of identical atoms that are bonded together.
atomic radius
A _____ is a positive ion while a ______ is a negative ion.
Cation, Anion
What are the second row of elements in block F called?
(14 elements with the atomic numbers form 90 thorium, to 103 lawrencium)
Actinides
Halogens
Identify the period, block, and group for the element [Kr]4d105s25p2
Period: 5
Block: P
Group: 14
Electrons on the outermost energy levels that are able to be lost, gained, or shared when forming chemical compounds are called ______ HINT( S+P)
Valence Electrons
If i have an element with 5 valence electrons what kind of ion sill it most likely become? why?
Anion, it will try to gain 3 electrons to get to 8
The p-block elements and s block elements are called
Main-group elements
What are the first row of elements in group F called?
(elements from 58 cerium, to 71 lutetium)
Lanthanides
Identify the period, group, and block of the element [Xe]6s24f145d106p2
Period: 6
Group: 12
Block: P
The atomic radii of cations tends to ______ moving form across the period form left to right. and they ____ as you move down a group
decreace, increace
Electrons want to form groups of ___ in order to satisfy the ______ rule
8, octet
Elements of group 2 are called what?
alkaline-earth metals
The d block elements are referred to as what?
Transition elements or transition metals
Find the group, period, block, and identity of the element [Ar]3d54s2
Group: 7
Period: 4
Block: D
Element: Chromium
Elements at the left of the periodic table tend to form ____. Why?
Cations. its easier for them to lose rather than gain electrons.
The ionic radii of cations decrease as the charge on the cation becomes _____
Stronger
A _____ is a poor conductor of electricity and heat. A ____ or semiconductor has some properties of metals and some properties of nonmetals.
nonmetal, metalloid
Describe the difference between an atoms ground state and excited state
Ground is the absolute minimum and excited is anything above that
Write down the given names for each of the following groups of elements in the periodic table.
A. Group 1 B. Group 2
C. Group 3-12 D. Group 17
E. Group 18
A. Alkali metals
B. Alkaline-earth metals
C. Transition elements
D. Halogens
E. Noble Gases
Why do atoms tend to get smaller as they go across the periodic table?
The increasing number of protons and electrons pull together because of their attraction
Why do atoms get larger as they move down a group in the periodic table?
the increase of the number of electron shells