When an atom loses an electron, it becomes a positive ion and the radius of the atom decreases. The correct answer is option 2.
An atom is the basic unit of matter that consists of a nucleus, which contains positively charged protons and uncharged neutrons, surrounded by a cloud of negatively charged electrons.
Therefore, option 2. The atom’s radius decreases, and the atom becomes a positive ion is the correct answer.
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Answer:
When an atom loses an electron, the atom's radius decreases and the atom becomes a positive ion.
Light penetration plays a crucial role in the oxygen concentration in the ocean. Light can penetrate up to 50 to 100 meters of the ocean water, leaving high concentration of oxygen at ocean's depth.
The deep oceans are high in the concentration of oxygen. The rates of consumption of oxygen at such depth are low. The phytoplanktons are found in the photic zones of oceans, where these organisms perform photosynthesis. Phytoplanktons are not observed in the deep layers of ocean, therefore, the oxygen consumption will be low. The photosynthetic organisms yield oxygen as a by product, and use up carbon dioxide.
Therefore, the oxygen concentration at deep ocean levels will be higher.
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a. True
b. False
c. a flask of pond water.
d. a jar of soil.
The sample that is a pure substance is:A. a test tube of zinc oxide.
A pure substance consists of only one type of substance with uniform properties throughout. In this case, a test tube of zinc oxide would be a pure substance. Zinc oxide (ZnO) is a chemical compound made up of zinc (Zn) and oxygen (O) atoms in a fixed ratio. It has a specific chemical formula and a consistent composition, making it a pure substance.
On the other hand:
B. A container of zinc and oxygen would be a mixture since it contains two different substances, zinc and oxygen, in their elemental forms.
C. A flask of pond water is a mixture because it contains a combination of different substances, such as water, dissolved minerals, microorganisms, and organic matter.
D. A jar of soil is also a mixture since it consists of a combination of various components, including minerals, organic matter, water, air, and possibly microorganisms.
Therefore, the correct answer is A. a test tube of zinc oxide, which represents a pure substance.
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Answer:
Name: Aluminum Sulfite
Explanation:
Systematic nomenclature: dialuminium tris [trioxosulfate (IV)]
Oxoanions: anions derived from removing H + from an oxo acid with a vulgar name:
(SO3)3^-2 (sulfite)
Metal cation according to valence number:
Al (III) or Al+3 (as a cation) (Aluminum)
There are different types of salts, in this case we have a simple salt and the nomenclature for binary substances is used when only one class of cation and one class of anion are present
So:
Al2(SO3)3: Aluminum Sulfite
Ions are charged particles that form when an atom (or group of atoms) receives or loses an electron, and ionic compounds are composed of these charged particles. An anion is a negatively charged ion, whereas a cation is a positively charged ion. Here Al₂(SO₃)₃ is aluminium sulfite.
Ionic compounds are defined as substances that are joined by ionic bonds. In order to reach their closest arrangement as a noble gas, elements can either gain or lose electrons. For the completion of the octet, ions are formed (either by gaining or losing electrons), which aids in their stabilization.
The name of the compound Al₂(SO₃)₃ is aluminium sulfite.
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