More cards in this set

who produced a table that became a basis for today's periodic table?

What were the early periodic tables based on?

Why did scientists not accept the first periodic table?

When did Mendeleev propose his periodic table?

What was Mendeleev's proposition?

What evidence made the later periodic table more acceptable?

When did scientists find out about protons and electrons?

Elements within a group have......................

Why is this?

the reactivity of metals..............as you go further down the group.