Crispy Crossword, Periodic Table

Soft, silvery-white, alkali metal
The lightest element
Lowest melting point of any element. Noble gas
Lightest alkaline earth metal
Non-metal, atomic mass 11
Non-metal, basic factor in coal, coke and charcoal
Makes up around 78% of the atmosphere, normally a gas
Makes up around 1/5 of the atmosphere, usually gas
Symbol La and atomic mass of over 130
Its symbol Hg comes from the greek word hydrargyum (it means 'liquid silver')
Member of the halogen group, only non-metal to be liquid at room temperature
Symbol comes from the Latin word cuprum, has a reddish orange appearance
Symbol comes from the Latin word ferrum, it makes up most of the world's crust
Symbol comes from the Latin word aurum meaning 'shining dawn'
Symbol comes from the Latin word argentum
Reacts quickly with water, is the base of salt
Reactive, symbol comes from the Latin word kalium, perhaps derived from the Arabic word qali meaning alkali
Symbol is Ca, atomic mass is 40
Non-metal, commonly known as a type of poison
Halogen, found in salt
Noble gas, its name comes from the Greek word kryptos, meaning 'the hidden one'
Halogen, atomic mass 127
Symbol is Rh, atomic mass is 103
Transition element, symbol is Y
A soft silvery blue metal, symbol Ga
A silvery white, soft, non-magnetic metal which is ductile and often found in kitchens
Used in flash lamps and arc lamps, symbol Xe
Symbol Ra, in alkaline earth metals group
A pale yellow, odourless, brittle non-metal
Transition element, derived from the Spanish word platina, meaning 'little silver'