Between the oxygen atom and the metal ion, the oxide is created. The first group of the periodic table contains a metal called X.
Periodic table is defined as a method of showing elements in a table where similar-property elements are grouped or displayed in the same vertical column. It is frequently recognized as a symbol of chemistry and is used extensively in physics, chemistry, and other sciences. It is a visual representation of the periodic law, which claims that the atomic numbers of chemical elements have a roughly periodic relationship with their attributes.
The element X is a member of the 15th group and third period. There will therefore be three shells in the atom, and its valence shell will contain five electrons. The electronic setup will therefore be 2, 8, 5. In addition, X's atomic number is 15 (2 + 8 + 5).
Thus, between the oxygen atom and the metal ion, the oxide is created. The first group of the periodic table contains a metal called X.
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Answer:
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Explanation:
B) noble gases
C) alkali earth metals
D) alkaline earth metals
The most stable because they can contain the most valence electrons in their outer shell. The correct option is B.
Thus, The group of elements on the periodic table known as noble gases, commonly referred to as inert gases, is thought to be the most stable.
They are radon (Rn), krypton (Kr), xenon (Xe), neon (Ne), helium (He), and argon (Ar). Noble gases are extremely stable and less likely to combine chemically with other elements because they contain entire valence electron shells.
Their full electron configurations, which result in low reactivity, are the cause of this stability.
Thus, The most stable because they can contain the most valence electrons in their outer shell. The correct option is B.
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Answer:
First one, 12.0.
Explanation:
Answer:
2) condensing of water vapor
Explanation:
Entropy is the measure of disorder in a system. Disorder means how "separated" and distanced the molecules, particles, etc. are from each other. Solids and crystals have rigid structures meaning that they have less disorder than gases and liquids that have free structures. Gases and liquids have a higher disorder than solids and crystalline structures. An increase in entropy means that the disorder is increasing; more heat and energy are being added. A decrease in entropy means that the disorder is decreasing and the structure becomes more rigid and ordered; less heat and energy are being added. So the condensing of water vapor means that disorder is decreasing, thus the entropy is decreasing.
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Answer:
An element is a pure substance that cannot be broken down into different types of substances. ... Examples of elements include carbon, oxygen, hydrogen, gold, silver and iron. Each element is made up of just one type of atom. An atom is the smallest particle of an element that still characterizes the element.
Explanation:
Pure substances found on the periodic table are called elements. They can be further divided into categories like main-group elements, transition metals, and inner transition metals such as alkali metals and chalcogens, based on their properties and compound formation.
Pure substances that are found on the periodic table are referred to as elements.
These elements, which include substances like iron, silver, gold, aluminum, sulfur, oxygen, and copper, cannot be broken down into simpler substances via chemical changes.
The elements on the periodic table can be further subdivided based on their properties. For instance, we have the main-group elements, transition metals, and inner transition metals, each which sit in specific locations on the periodic table. A great example would be the elements in group 1, also referred to as the alkali metals. All alkali metals share similar chemical properties and they form compounds that consist of one atom of the element and one atom of hydrogen.
Another example is the chalcogens, also known as the oxygen group or oxygen family. Essentially, the periodic table serves as a map of all the known elements, each with unique properties that classify them as a certain type of element and determine their positioning on the table.
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