team familyperiod alkali metal alkaline earthmetal halogen noble gasmetal nonmetal semimetalvalence electron abbreviated electronconfiguration noble gas within core

Web Resources:

Notes: (5-2)The periodic Table:Our existing periodic table list 109 elements. Itis i ordered it according come the regular law: Elements space arranged in bespeak of raising atomic number, their physical and also chemical properties show a regular pattern.

You are watching: Horizontal rows on the periodic table are called

Elements that have comparable properties are arranged in groups or households - upright columns The horizontal rows are referred to as periods.


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Each duration contains an ext elements 보다 the ahead one. This needs to do through the increasing power levels (n=1, ...) the the atom.
period 1 - 2 elements
period 2 & 3 - 8 elements
period 4 & 5 - 18 elements
period 6 - 32 elements

Labeling and Naming:

There are right now 3 number is numbered schemes supplied in chemistry because that the orderingof groups.

Arabic - 1A-2A, 3B-8B, 1B-2B, 3A-8A
Number - 1-18


1A - alkali metals
2A - alkaline earth metals
7A - halogens
8A - noble gases
4A - sometimes known as the Carbon group

Exception - Hydrogen deserve to be much better placed in team 7A. Although,some publications place it in both.


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Metals & Non-metals:

Metals encompass the locations shaded irradiate blue andinclude the families 1A & 2A. They share countless characteristics.

luster (shine)
good conductors the heat and also electricity
typically solid at room temperature
most space malleable and ductile

Non-metals room shaded light red in most periodictables and kind a diagonal line from C-6 come Rn-86 and also include every the elements ofthat edge including H. Castle share few of these characteristics.

do no possess luster
poor conductors of heat and electricity
neither easy or ductile
many space gasses in ~ room temperature
can it is in solid, semisolid, gas, or fluid (Br). One is the hardest product on Earth

Semimetals or metalloids room shaded irradiate lightpurple in most periodic tables form a diagonal from B-5 come At-85 and include allthe facets Ge-32 and also Sb-51. Castle share few of thesecharacteristics.

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have part properties the metals and some of non-metals

Electron Configuration:

As friend learned earlier, the number of protons inan atom is same to the number of electrons in the atom if that is neutral.The periodic table allows you to predict the bonding of an atom by enabling youto view the number of electrons in the valence orbital. The valence orbitalis the highest, outermost orbital of the atom and is the only one associated inthe bonding that the atom. Below are some hints for predicting valenceelectrons:


Elements the the same group (column) have the same valence electrons or configuration
s-block is group 1A & 2A
p-block is group 3A to 8A
These space the representative aspects or main team elements
d-block is group 3B to 2B (look in ~ the periodic table above because the numbers room not sequential)
These space the change metals
f-block is located listed below the key table
These space the inner change metals or rare planet elements

To save space on electron construction notationyou deserve to use the abbreviated notation by listing the within gas core and also then thevalence electrons.