Tarini
How many elements are in the Periodic Table
118
Lithium is in Group ____ as it is an alkali metal.
I
80% of the elements are ______
metals
What is a column of elements referred to as?
A period.
Which definition is : 'The arrangement of elements that shows regular patterns, with similar elements appearing at regular intervals.'
Periodicity
How many electrons does hydrogen have in its valence shell?
1
What are the elements in Group VII called?
Halogens
What type of element are the transition elements?
They are all metals
Aluminium is a metal with a valency of 3+. What group would it be in?
Group III
What does a period tell us?
The number of electron shells
Group VIII atoms have full outer shell electrons - known as __________ and __________
unreactive and monoatomic
An atom has 7 protons. Which element does this atom belong to?
Nitrogen
What is the number of outer shell electrons in atoms also known as?
The atomic number
How can we predict the properties of an element
By knowing its position on the periodic table!!
What is the trend that takes place in Group I elements?
The elements become more reactive as you go down
____ and _____ can glow when voltage is applied. Name these elements
Neon and Argon
How many elements in the periodic table don't occur naturally?
24
Oganesson (Og) is an example of a ________
Noble/Inert gas
Where are transition metals found?
Found between Groups II and III, along with lanthanoids and actinides in Periods 6 and 7
Name an element from the Vth group
Any from Nitrogen, Phosphorus, Arsenic, etc