At stp which element is brittle and not a conductor of electricity

Non-metals are brittle. 

but for brittle property, they need to be solid. 

sulphur is solid at stp. 

argon(ar) is a gas at stp, so it cannot be brittle.
argon is a gas at stp(its in the noble gasses)

Your answer is the element of S I think.

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy