periodic table teaser

Astatine has the formula?

Oxygen is in group ?

The element with 4 electrons must be in group?

Lithium   +     water   ------->     ?         +         hydrogen

There are approximately twice as many metals as non-metals in the modern periodic table.

In the modern periodic table, elements are listed in order of ?

Which one ofthe following statements about sodium's reaction with water is false?

At room temperature, there are more than five elements that can be called diatomic.

The atoms of elements get bigger or smaller as we go down a group in the periodic table?

Reactivity of elements in group 1 increases down the group , because as we go down the group

Complete the word equation: Flourine +  sodium iodide ---->  sodium fluoride  +   ?

When a group one element such as sodium reacts, its outer electron is?

Whihc one of the following has 3 electrons in its outer shell?

The formula for iodine is ?

sodium hydroxide in water is?

The formula for iron (III) chloride is?

What is the missing numbers?     ?Na   +    Cl2 ------->    ?NaCl

The order of colours of the halogen elements as we go down the group as far as iodine is?