Chemistry, 24.06.2019 03:20 Lesquirrel
Agroup of students working in a high school chemistry lab believe they have discovered a new element! how exciting? upon further testing by scientists (with better equipment), it is found that the new element contains 74 protons and 110 neutrons. what is the atomic number? what is the mass number? is this a new element? explain. give the name and symbol for this element. is it solid, liquid, or gas? explain
Answers: 3
Chemistry, 22.06.2019 03:00
In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?
Answers: 3
Agroup of students working in a high school chemistry lab believe they have discovered a new element...
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