Silicon is lustrous and is a conductor of heat and electricity. which class of elements could this element belong to?
a. metal
b. non-metal
c. metalliod
d. all of the above

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons

Apound is approximately 0.45 kilogram. a persons weighs 87 kilograms. what is the persons’s weight, in pounds, when expressed to the correct number of significant figures