PERIODIC TABLE

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• Im here to help you with the periodic table and how you can learn it.its very easy to read if you know what you are looking at
• Im  Dmitri Mendeleev. I the person who created the periodic table.
• And . BTW Im invisible
• ﻿umm.. who are you and what are you?? wait how do you know?
• ok so lets get started.. i hope its easy like you say it is.﻿
• Groups tell you how many valence electrons are in each element. Groups are in columns.
• OK lets start off with something easy...see how they are in rows and columns.. those are in groups and periods.
• See the last column on the right..that is group 17. In this column each element has 7 valence electrons.
• Except Helium(He) That only has 2 Valence electrons a special element
• Periods are in rows. Each row tells you many atomic orbitals it has.
• Valence electrons are the outer shell on the atom ﻿
• ﻿The elements on the periodic table are very easy to read.The atomic number determines an elements identity. It also determines how many protons and electrons too.
• ﻿the most reactive groups are 1 and 17 because group 1 only have well 1 Valence electrons and group 17 gives only 7 valence electrons
• ﻿the least reactive groups are 18 because they are noble gases
• An atom's reactivity is determined by the number of electrons in its outermost shell. Because the outer shell can hold up to eight electrons.
•  not all elements are able to fill these shells to capacity, the fullness of the shells will determine the volatility of the atom's reactive properties.﻿
• ohhh..i think im starting to get the hang of it﻿
• They are along the very dark zig_zag line﻿. well metalliods are. but non_metals are in groups 14-16.and metals are found in group 1.
• finally last but not least the final lesson. This lesson involves Metals, non-metals and metalliods.
• ﻿Metalloids have properties of both metals and non-metals.
• ﻿ metals are malleable, ductile, and are good conductors of heat and electricity. The alkali metals are softer than most other metals.
• ﻿OMG thank you Dmitri Mendeleev. You really helped me out alot
• ﻿ non-metals have no metallic luster, and do not reflect light.
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