the periodic table Flashcards
(8 cards)
1
Q
How are elements arranged in the periodic table?
A
- increasing atomic number (number of protons)
2
Q
where are elements with similar properties found in the periodic table?
A
- in the same group
3
Q
the rows in the periodic table are called…
A
…periods, think of long period
4
Q
why is it called Periodic Table?
A
because presence of similar properties within elements
5
Q
what do elements in the same group have in common?
A
- same amount of electrons in the out most shell, this gives them simialr chemical properties
6
Q
how were elemnnts in the early periodic table arranged?
A
- based off atomic weight of atom
7
Q
what do elements in the same period have in common?
A
- same number of shells
8
Q
how did mendeleev overcome the problem of elements being in the not belonged groups?
A
- he left gaps and chnaged the order based off atomic number not atomic weight
