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OpenStudy (kitten_is_back):
@jabez177
OpenStudy (kitten_is_back):
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
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OpenStudy (kitten_is_back):
i dont;-; brbbbbbbb
jabez177 (jabez177):
He means the answer is C.
OpenStudy (kitten_is_back):
oh thank s xddddddddddddTHE HELL IS THEE OUC XD
OpenStudy (kitten_is_back):
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
jabez177 (jabez177):
Idk, Biology isn't my thing...
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OpenStudy (anonymous):
Helium has 1 electron shell. Neon has 2 electron shells. Argon has 3 electron shells. So on and so forth.
OpenStudy (anonymous):
Hint: These elements are in the far right-hand column (noble gases). And I went in order from top to bottom.