What did Berzelius measure in order to develop his electronegativity scale? Why would this scale be inaccurate for half of all chemical reactions?

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

hope this mark me brainliest