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What two elements in the fifth period violate the original periodic law as stated by Mendeleev?

THse elements are tellurium and iodine.


What did John Dalton get wrong?

Thse affirmations are not considered valid today:· All atoms of a given element are identical. · A given compound always has the same relative numbers of types of atoms.


How many moons thse each planet have?

As of October 2023, the number of moons for each planet in our solar system varies significantly. Mercury and Venus have no moons, while Earth has one. Mars has two, Jupiter has 80, Saturn has 83, Uranus has 27, and Neptune has 14. Additionally, dwarf planet Pluto has five known moons.


What factors can affect the time it takes for an ice cube to melt?

Factors that can affect the time it takes for an ice cube to melt include the temperature of the surrounding environment, the size and shape of the ice cube, the material it is placed on, and the presence of any insulating barriers. High temperatures, small ice cube size, direct contact with a warm surface, and lack of insulation can all contribute to faster melting.


Are there any exceptions to thse trendsif so which elements break the trendwhy did your froup arrange the elements the way yardid?

Yes, there are exceptions to trends in the periodic table, such as the behavior of transition metals and some metalloids. For instance, elements like chromium and copper exhibit irregular electron configurations that deviate from expected patterns. My group arranged the elements based on their atomic number and similar properties, which helps highlight trends in reactivity, electronegativity, and ionization energy, while also considering exceptions that arise from electron interactions and stability. This organization allows for easier understanding of the relationships between different elements.