C8 supplement

Does the reactivity decrease or increase as we go down in group 1?

Reactivity increase, because the force of attraction weakens, so losing one electrons becomes easier

Does the reactivity decrease or increase as we go down in group 7?

Reactivity decreases, because the force of attraction weakens, so gaining an electron becomes harder

what is the state when in room temperature and appearance of chlorine

gas, pale green

what is the state when in room temperature and appearance of bromine

liquid, red-brown

what is the state when in room temperature and appearance of iodine

Solid, grey black

What is the rule in halogen displacement?

A more reactive halogen displaces the less reactive halogen

What do transitions metal have compared to other metals?

It forms variable oxidation numbers, such as Fe2+ and Fe3+

State the properties that distinguish transition elements from group 1 metals

high density

high melting point

form colored compound

Describe the trend of boiling points in noble gases

Boiling point increases as the force of attraction becomes stronger as the radius is getting bigger