The formula unit for a compound made from lead (Pb4+) and sulfur (s) is PbS2 or lead sulfide.
Sulfur has an anion, its in family 16; thus it has 6 valence electrons; therefore it will need to gain two electrons to attained an octet configuration, giving it a charge of 2-. Lead has four valence electrons; it will need to lose four electrons to be stable; it will therefore give the four electrons to two sulfur atoms.
The particles are moving very fast, yet are very far from each other in the gas or vapour state. After condensation they slow a bit down and move closer together. Finally when frozen the particles are almost stuck together and they barely move/vibrate.
Answer:O D to protect the environment from harmful chemicals
Explanation:
Answer:
Salamander And Lizard are the closest
Explanation:
A salamander is an amphbian just like a lizard. All the others aren't even CLOSE To the same species.
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Answer:
2RbNO₃ + BeF₂ → Be(NO₃)₂ + 2RbF, because Be keeps a 2+ charge throughout the reaction.
Explanation:
- It is a double replacement reaction.
- A double replacement reaction is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.
- In this reaction, there is no change in the oxidation state of different atoms.
- It is just a replacement reaction.
<em>2RbNO₃ + BeF₂ → Be(NO₃)₂ + 2RbF, because Be keeps a 2+ charge throughout the reaction.</em>