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What does an elemts atomic number mean?
An element's atomic number represents the number of protons in the nucleus of an atom of that element. It is unique to each element and determines its position on the periodic table. The atomic number also determines the element's chemical properties.
Why did Medeleev arrange he order of elemts of mass?
Dmitri Mendeleev arranged the elements in his periodic table by increasing atomic mass because he noticed a periodic pattern in properties repeating every 8th element. This arrangement allowed him to predict the properties of undiscovered elements and left gaps for them in his table.
What is the least reactive metal in the alkali metal group?
Francium is the least reactive metal in the alkali metal group. This is due to its large atomic size and low electronegativity, which result in weaker attraction to electrons and less reactivity compared to other alkali metals. However, francium is extremely rare and radioactive, making it difficult to study its chemical properties.
What does an elemts atomic number mean?
An element's atomic number represents the number of protons in the nucleus of an atom of that element. It is unique to each element and determines its position on the periodic table. The atomic number also determines the element's chemical properties.
Why did Medeleev arrange he order of elemts of mass?
Dmitri Mendeleev arranged the elements in his periodic table by increasing atomic mass because he noticed a periodic pattern in properties repeating every 8th element. This arrangement allowed him to predict the properties of undiscovered elements and left gaps for them in his table.
Good skills in book design page layout typing and graphical elemts are best suited to which art career?
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What is the least reactive metal in the alkali metal group?
Francium is the least reactive metal in the alkali metal group. This is due to its large atomic size and low electronegativity, which result in weaker attraction to electrons and less reactivity compared to other alkali metals. However, francium is extremely rare and radioactive, making it difficult to study its chemical properties.
What information is contained in a chemical equation?
A chemical equation contains the symbols and formulas of the reactants and products involved in a chemical reaction, along with the coefficients that represent the relative amounts of each substance. It also shows the state of matter (solid, liquid, gas, aqueous) of each substance and depicts the conservation of mass and atoms in the reaction.
Limitations of newlands law of octaves?
This law could be best applied, only up to the element calcium. Also, newly discovered elemts could not fit into the octave structure and the feature of resemblance of the 8th element when arranged in increasing order of their atomic mass was not successful with heavier elements.
What two elemts will form non covalent bounds?
Two elements will form ionic bonds if the electronegativity difference between them is greater than 1.6 -2.0. Opinions vary as to the exact differences. Metals typically have low electronegativities which is where the simple rule metal with non metal comes from.
Is figure skating a challenging sport?
Definitely!! Figure skaters require the speed of a speed skater, strength of a hockey player, flexibility and balance of a gymnast, and grace of a ballerina. And while doing all of that, they do their elemts in a high-heeled boot on two thin blades. Now.. you tell me, does that seem challenging or what!?!?
What is methane an element?
Methane is not an element. It is composed of two other elements, carbon and hydrogen. So, it is a chemical compound with the chemical formula CH₄. Each gas molecule of the compound contains one carbon and 4 hydrogen atoms
What kind of matter is formed when atoms of two or more elemts bond?
When atoms of two or more elements bond together, they form a compound. A compound is a substance made up of two or more different elements that are chemically bonded together in fixed ratios. This bonding involves the sharing or transfer of electrons between atoms.
What are the skills needed for an elementary teacher?
He or she need to know math reading and writing and the CAN NOT have a temper problem.
How many books of Avatar the Last Air Bender are there?
There's four elements: water, earth, fire and air. Though Aang already has air mastered because he was born an air-bender and was trained in matering it befroe being trapped in the ice, there are three elemts he still has to master. The elements are the chapters. So there's three: water, earth and fire.
