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Development of the periodic table Flashcards | StudBud

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Johon Dalton noticed the properties of elements repeated how often?

What order did John Dalton and early Chemists place the elements in?

Development of the periodic table

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Development of the periodic table

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Answers

1
What order did John Dalton and early Chemists place the elements in?
Number of electrons in their outer shell
Atomic Mass
Atomic number
Number of electrons
2
Johon Dalton noticed the properties of elements repeated how often?
Every 4th element
Every 10th element
Every 3rd element
Every 8th element
3
What are group 7 elements otherwise known as?
Alkaline Earth metals
Alkali metals
Halogens
Noble gases
4
Why was Mendeleev's periodic table different to previous attempts?
He rotated it around by 90°
He included noble gases
He ordered things using their number of electrons
He left gaps for undiscovered elements
5
How many electrons do all the alkali metals ahve in their outer shell?
3
2
1
4