Is hammering wood together a physical or chemical change?

a electronegativity decreases beacuse the size of nucleus is bigger.

no statements shown

the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl

c) should be the answer.