For example phosphorus and oxygen can covalently bond to form a polyatomic ions, PO4³⁻ and PO3³⁻.
Answer:
1. CrCl₃ 2. MnO₂ 3. MgCO₃
Explanation:
For a compound to be neutral, we need the same number of positive charges and negative charges.
1. Cr³⁺ ions and Cl⁻ ions. We will need 1 Cr³⁺ cation and 3 Cl⁻ anions. The chemical formula is CrCl₃.
2. Mn⁴⁺ ions and O²⁻ ions. We will need 1 Mn⁴⁺ cation and 2 O²⁻ anions. The chemical formula is MnO₂.
3. Mg²⁺ ions and CO₃²⁻ ions. We will need 1 Mg²⁺ cation and 1 CO₃²⁻ anion The chemical formula is MgCO₃.
Answer:
(σ2s)2(σ2s*)2(σ2p)2(π2p)4(π2p*)2(π2p*)1
Explanation:
In writing molecular orbital configuration, the number of valence electrons involved in the molecule are all written into various molecular orbitals in accordance with the Aufbau principle.
O2^- contains 17 electrons. Its molecular orbital configuration is KK(σ2s)2(σ2s*)2(σ2p)2(π2p)4(π2p*)2(π2p*)1. Recall that the inner (σ1s)2 and (σ1s*)2 is designated as KK. This inner shell does not take part in bonding. The bond order in O2^- is 1.5.
The explosion of the firework produces gases, and their electrons are excited. As they return to their ground state, they emit colored light according to the chemicals used: blues from copper compounds, yellow from sulfur, green from barium, and so on.
Answer:
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