When lithium reacts with bromine to form the compound LiBr, each lithium atom:(1) gains one electron and becomes a negatively
charged ion
(2) gains three electrons and becomes a negatively
charged ion
(3) loses one electron and becomes a positively
charged ion
(4) loses three electrons and becomes a positively
charged ion
Answers
Lithium has one valence electron and Bromine has seven. Therefore Lithium will give up its one to Bromine for both to have an octet
Answer:
loses one electron
Explanation:
Related Questions
A mineral is a naturally occurring solid with a regular, repeating structure. true or false
Balance this chemical equation pleaseee
When burned, coal releases _____. oxygen carbon dioxide methane sulfur nitrogen oxide?
The atomic mass unit (amu) isa. the mass of a single atom of carbonb. one millionth of a gramc. approximately the mass of a protond. approximately the mass of an electron
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Final answer:
Minerals can be described using 7 key characteristics: color, streak, luster, crystal form, hardness, cleavage, and density. These characteristics provide detailed information about a mineral's geological properties.
Explanation:
The characteristics used to describe minerals are generally located in the detail of their geological properties. These characteristics include:
- Color: The appearance of the mineral in natural light.
- Streak: The color of the mineral in powdered form.
- Luster: The way a mineral reflects light, either metallic or non-metallic.
- Crystal Form: The external shape of the mineral crystal.
- Hardness: A measure of the mineral's resistance to being scratched.
- Cleavage: The manner in which the mineral breaks along regular planes.
- Density: The mass per unit volume of the mineral, measured by specific gravity.
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A mixture can be separated into pure substances with the utilization of several techniques of physical methods like simple distillation, centrifugation, sedimentation, etc.
What is the function of simple distillation?
Simple distillation may be defined as a type of separation technique that involves the separation of solvent from a solution. This technique is utilized for purifying the liquids that comprise either nonvolatile impurities such as sand, salt, and other very small amounts of particles.
Apart from simple distillation, evaporation is also used to eliminate water or any liquid substance from a mixture. It makes the solution or mixture dry with the absolute absence of water.
The Centrifugation technique is used to separate the particles on the basis of their size, shape, density, viscosity, and rotor speed.
Therefore, with the utilization of separation techniques, one can easily separate a mixture into pure substances.
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Answer:
mixture can be separated into pure substances by simple distillation
Answers
Volume: ? L
Answers
? ------------- 274 mL
L = 274 * 1 / 1000
= 0.274 L
hope this helps!
Answers
Answer:
D: Heat flows from the counter to the ice, causing the molecules in the counter to move more slowly.
Explanation:
Answer: D
Explanation:
edge
Answers
An element or compound's oxidation number is mainly dependent on its charge, except in special cases.
In PbO₂, Oxygen's oxidation number is always -2, except in hydrogen peroxide where it is -1. Since PbO₂ is neutral, its total oxidation number must be 0. Since there are two oxygens with an oxidation number of -2, we know that Pb's oxidation number is +4, since +4 -2×2 = 0.
Using the same method we can find Pb's oxidation number in PbCl₂. Unless paired with another halogen, which it isn't, Cl in a compound has an oxidation number of -1, so Pb = +2 since +2 -1×2 = 0.
Pb's oxidation number has gone from +4 to +2, so it has been reduced, so A. Pb is not the answer.
Oxygen in a compound's oxidation number is always -2 unless in H₂O₂ and it isn't on either side of the equation, so its oxidation number doesn't change and it remains in a compound, so B. O is not the answer.
Hydrogen in a compound's oxidation number is always +1, except in hydrides when it is -1, but it isn't, so it doesn't change , so C. H is the answer.
Therefore D. Cl is correct, since its oxidation number increases from -1 in HCl to 0 in Cl2 (since elements not in a compound have an oxidation number of 0)
Hope this helps!