Question

Cell chemistry and biology question ! how many protons, electrons and neutrons are there in a neutral atom of potassium having an atomic weight of 39?

Answer 1

What's the atomic number of K?

Answer 2

idk it doesnt saay .

Answer 3

of potassium?

Answer 4

K is Potassium.

Answer 5

19

Answer 6

its atomic number is 19

Answer 7

soo whats the answer?

Answer 8

check ptable.com it will have the weights right there in amu

Answer 9

www.ptable.com

Answer 10

19 electrons

Answer 11

Just Advice Ask at the Chemistry subject?.. :3

Answer 12

it wont let me click on it.

Answer 13

and what am i looking for on the ptable.com ?

Answer 14

how many protons, electrons and neutrons
# of protons = # of electrons for K = 19
atomic weight of 39 = sum of protons and neutrons in the nucleus
for K # neutrons = 39 - 19 = 20