I was thinking about something like this:

 

• Melting point - 962C - I won't be silver if it has melting point of Tungsten. How can silver has that high melting point? I'd prefer to have silver with melting point of 962C. It will be enough for simple heating systems. PHOT can't melt SILV. Many explosive elements can't melt it too. You will be able to create destroyable power plants. In many engines/generators (even nuclear generators) we have temperatures around 200C - 700C. Silver with melting point of 962C will be realistic and fun to play because you can simulate overheating and other dangerous situations.
• Can conduct heat very fast - Yes, I like the idea of easy-destroyable HEAC. 
• Can conduct faster than gold - I like this too. SILV should conduct on 4pix range. It will be fun to play. The spark will be able to travel even through walls with 4pix of width. It should ignore INSL too but instalator should decrease its conductivity. It will conduct spark only on 2pix if it's behind INSL.
• 50% PHOT are reflected - many elements can reflect photons but silver will reflect only 50% of them. If there's one pixel of empty space or element that allows photons (like glass) around it when PHOT is going through silver, then PHOT will continue moving through SILV as long as there's one pixel of empty space or element that allows photons around it. Photons will pass through one layer of SILV if there's nothing behind it. This allows you to better use reaction when SILV gets darker when photons hit SILV.
• Changes colour of photons to white - silver is white shiny metal. Photons should change its colour to white, so silver will be element that can set PHOT's colour to default value.
• Virus dies when touching it - I like this idea.
• ACID/CAUS resistant element - Silver should be resistant to Acid like gold.
• Blocks some PROT - Silver can block about 10% of all PROT.
• Don't react with preassure - preassure can't destroy it but can go through it.
• Silver can reflect neutrons.
• Can conduct electricity to most electronics (instead of INWR, INST, PTCT, NTCT).
• Silver will slowly turn black after being exposed to many photons - Silver is used to take photos in real life. In TPT silver will turn black when long-exposed to light source (PHOT). Every PHOT particle will make it a little bit darker. Every PHOT will increase tmp value by 1. When tmp reach 250, silver will be dark as COAL and won't get darker. This reaction can be used to simulate taking photos. One PHOT can react with one SILV particle at the same time but one PHOT can react with silver many times. This entire effect is opposite to effect with heating coal. 

The conduction speed would be... Faster Than Light.

Sorry, I had to make this pun.

@TPT_PL (View Post)

 Oh no! What would happen when informations traveled faster than light?!

You're right. This will destroy spacetime!

@Fusionftw (View Post)

 And what uses does this have? Why should this be added to the game?

@docRoboRobert (View Post)
I don't see how that last part about "realistic photos" would be realistic at all, or possible to use in a save.

Btw, HEAC can be destroyed by LIGH

@Fusionftw (View Post)

 Also, SILV can protect IRON from corrosion.

@docRoboRobert (View Post)

 you are just throwing in properties now randomly. Gold already does this.

@zaccybot2 (View Post)

 So, why other element can't do this too?