Na 1s²2s²2p⁶3s¹
↓ - e⁻
Na⁺ 1s²2s²2p⁶ 2+2+6=10 e⁻
10 electrons are in sodium ion Na⁺
Answer:
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At STP, copper (Cu) would be the only substance here that will exist in the solid state.
Answer: is A
Explanation:
how becuase i just take the test