PLEASE ANSWERRR

Which of the following statements regarding electric insulators is correct?

A. Electric charges move freely in electric insulators.
B. Electric insulators are good heat conductors.
C. Charges within electric insulators do not readily move.
D. Electric insulators have high tensile strength.

A. Electric charges move freely in electric insulators

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.