Which of these is a property of acids?
a. they produce hydrogen gas when reacted with metals
b. they taste bitter
c. they feel slippery
d. they turn litmus paper blue

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.

i wish i could but this one is weird give me abc and i can solve it.