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15.a. He
b. Na
C. Fe
d. Fluorine
e. Fe
sonia709:
thanks for marking it as the brainliest answer
Answered by
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15)
i)neon
ii)sodium-Na
iii)sodium-Na
iv)fluorine-f
v)iron-fe
i)neon
ii)sodium-Na
iii)sodium-Na
iv)fluorine-f
v)iron-fe
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