periodic tables - SC4 Flashcards
1
Q
define characteristics of Mendeleev’s table
A
- left gaps for predicted elements
- sorted based on properties of compounds
- in order of atomic mass
- 50 elements
2
Q
give examples of predicted elements from Mendeleev’s table
A
He predicted ekasilicon which later out was discovered as germanium
3
Q
when was mendeleev’s table created
A
1869
4
Q
give characteristics of the modern periodic table
A
118 elements arranged
order of atomic number since the discovery of protons and electrons
