Fire, Ice, Electric, and Earth.
Convexity.
Convexity, in DotD known as 'Fury Element.' (Not fury itself.)
The Skylander that resembles Spyro but is undead is called "Spyro's Adventure" character named "Ghost Roaster." He has a skeletal appearance and is part of the Undead element in the Skylanders series. Ghost Roaster is known for his ghostly abilities and unique combat style, which sets him apart from the original Spyro character.
Gadolinium (Gd) is an element.
Yes, In The Legend Of Spyro Dawn Of The Dragon Spyro & Cynder Are Equipped with ELEMENT powers not normal powers Ex: Shape Shift, Time Stop, World Freeze Etc. Natural findings on earth are technechally element powers Ex: Water Ice Fire Earth ( rocks and such) But That Rule Doesnt Apply To All.
Hydrogen
No. Spyro is a rare purple dragon: he can use fire, electricity, ice, earth, fury-powers, and (in the first two LOS games) time. Cynder is a unique black dragon: she can use poison, fear, wind, and (my favorite element) shadow.
(In Order) Spyro the Dragon Spyro: Ripto's Rage Spyro: Year of the Dragon Spyro: Enter the Dragonfly Spyro: Hero's Tail Spyro: Shadow Legacy The Legend of Spyro: A New Beginning The Legend of Spyro: The Eternal Night The Legend of Spyro: Dawn of the Dragon (Gameboy) Spyro: Season of Ice Spyro: Season of Flame Spyro: Attack of the Rhynocs Spyro: The Cortex Conspiracy (Newer games) Skylander's: Spyro's Adventure (Coming in fall 2012) Skylander Giants
The transition metals.
Metals
noble gas
AKEM