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The atomic mass of iodine is less than the atomic mass?
The atomic mass of iodine is about 126.9 g/mol, which is indeed less than the atomic mass of many other elements. This low atomic mass for iodine is due to its position in the periodic table and the number of protons and neutrons in its nucleus.
Which two elements have an atomic mass less than twice their atomic number?
Elemental hydrogen and helium have atomic masses less than twice their atomic numbers.
How atomic number better than atomic mass?
No two elements may have the same atomic number. But two elements may have same atomic mass. Hence atomic number is better than atomic mass.
Who arrenged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?
Mendeleev is usually credited as the first person to do so. Subsequently, chemists learned to arrange the elements by atomic number rather than atomic mass.
How would the periodic table look different if it were arranged according to the atomic mass?
If the periodic table were arranged by atomic mass, some elements would be in a different order compared to the current arrangement by atomic number. This would mean elements with similar atomic masses would be grouped together, rather than by atomic number. The trends and patterns in the properties of elements might be less clear compared to the current layout based on atomic number.
The atomic mass of iodine is less than the atomic mass?
The atomic mass of iodine is about 126.9 g/mol, which is indeed less than the atomic mass of many other elements. This low atomic mass for iodine is due to its position in the periodic table and the number of protons and neutrons in its nucleus.
Which two elements have an atomic mass less than twice their atomic number?
Elemental hydrogen and helium have atomic masses less than twice their atomic numbers.
How atomic number better than atomic mass?
No two elements may have the same atomic number. But two elements may have same atomic mass. Hence atomic number is better than atomic mass.
What element has mass less than thirty?
well a lot of elements have atomic mass so then you would have to look at the periodic table to find the right answer
Why can an element have the same atomic mass as another element?
Two elements can have the same atomic mass if one has more or less neutrons than protons in the nucleus. These are called isotopes. not much to im prov thank you
What element has an atomic mass greater than 75 but less than 79?
Element 34, Selenium, has an atomic mass of about 78.96.
Which scientist arranged the elements in order of increasing atomic number rather than increasing atomic mass?
Henry Moseley arranged the elements in order of increasing atomic number rather than increasing atomic mass, which led to the modern periodic table.
Can the atomic number be multiplied by two then equal the atomic mass?
Not generally. For light elements this relation is often approximately true, but for heavier elements, the gram atomic mass is more than two times the atomic number, as the ratio of neutrons to protons increases with increasing atomic mass.
What scientist in 1913 aranged the elements by atomic number rather than atomic mass?
Henry Moseley
What are the four element that have atomic number less than 8?
There are seven elements with atomic number less than 8: hydrogen, helium, lithium, beryllium, boron, carbon, and nitrogen. I don't know where you got the notion that there were only four. I thought you might be thinking of atomic mass instead, but that doesn't work either ... there are only 3 elements that have stable isotopes with a mass below 8 amu (hydrogen, helium, and lithium). 7Be exists, but it's radioactive.
Who arrenged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?
Mendeleev is usually credited as the first person to do so. Subsequently, chemists learned to arrange the elements by atomic number rather than atomic mass.
What property did Mendeleev use to primarily the elements into a periodic table?
The basic organization structure was by atomic mass, which while it may follow a trend of increasing with each progressing element on the modern table, which is organized by atomic number or number of protons, there are a few exceptions, such as Argon having a greater atomic mass than Potassium, even though Argon has one less proton.
