http://prntscr.com/9fhtaa
@jabez177
Models of four atoms are shown as figures A, B, C, and D. Which two atoms represent isotopes of the same element? A. B and C B. A and D C. C and D D. B and D
c
You already knew the answer. @Kitten_is_back
i dont;-; brbbbbbbb
He means the answer is C.
oh thank s xddddddddddddTHE HELL IS THEE OUC XD
Which is true moving down a column or group in the Periodic Table? A. each element has one more electron shell B. each element has one more electron C. each element has one less electron shell D. each element has one less electron
Idk, Biology isn't my thing...
Helium has 1 electron shell. Neon has 2 electron shells. Argon has 3 electron shells. So on and so forth.
Hint: These elements are in the far right-hand column (noble gases). And I went in order from top to bottom.
Join our real-time social learning platform and learn together with your friends!