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Why do elements of even atomic numbers are more abundant than that of odd numbers?
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What is the number of elements in an event space for rolling an even number on a single die?
The even numbers that can be rolled on a single die are 2,4, and 6 so the number of elements in the event space is 3. X={2,4,6}.
What is the median of numbers?
The "median" is the "number in the middle", if you sort the numbers. If (as here) the set has an even number of elements, you sort them, and then take the average (arithmetic mean) of the two numbers in the middle - in this example, the 5th and 6th number.
What are multiples of 2 called?
Those are called "even numbers".Those are called "even numbers".Those are called "even numbers".Those are called "even numbers".
Is 10 abundant deficient or perfect?
10 is perfect because it is even
What even numbers add of to 9?
No even numbers add up to 9. The sum of even numbers is always an even number.
Why are elements of even atomic numbers more abundant?
Oddo-Harkins rule Rule stating that the cosmic abundance of elements with an even atomic number is greater than that of adjacent elements with an odd atomic number. Consequently, a graph plotting relative atomic abundance against increasing atomic number (Z) displays a 'toothed' curve, rather than a smooth line. The reason for this is connected with processes such as helium burning (see nucleosynthesis). 42He is a basic building block, and so additions produce even numbers, e.g. 42He + 42He → 84Be;84Be + 42He → 126C. AILSA ALLABY and MICHAEL ALLABY. "Oddo-Harkins rule." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 21 Mar. 2009 .
What elements have such small masses that they are not even considered when atomic masses are calculated?
Electrons
How does mendeleevs periodic table differ from moselys periodic table?
Mendeleev's Periodic Table was different from Moseley's in that Mendeleev arranged the elements inÊthe table according to atomic masses while Mosley's periodic table was arranged accordingÊto atomic numbers that were increasing.ÊÊThe modern periodic table used today is based on the Moseley model.
How can specific elements be identified in the periodic chart?
element symbols, atomic number and atomic mass, or even color on some tables.
What element is the lightest of the elements?
Hydrogen is the lightest of all elements. According to the Periodic Table, its atomic weight is 1.00794 u, even lighter than helium.
What is the name of the two numbers assigned to every element on the periodic table?
Atomic number (protons) and atomic mass (not to be confused with atomic weight, even if the difference is slight)
Why odd atomic number elements have 2 isotopes?
I don't know where you got the notion that elements of odd atomic numbers have two isotopes, but we don't have to look far for a counterexample: hydrogen... atomic number 1... has not one, not two, but THREE isotopes that exist for meaningful lengths of time. If you mean STABLE isotopes, then we have to go a bit further: the first four elements of odd atomic number (hydrogen, lithium, boron, nitrogen) do in fact have two stable isotopes. However, at the fifth we find our counterexample: fluorine (atomic number 9) has only one stable isotope, fluorine-19. Furthermore, helium (atomic number 2) ALSO has two stable isotopes, so we can't even invert the original question and ask why EVEN atomic number elements DO NOT have two isotopes. The question is therefore meaningless, as it's asking for an explanation of something that does not, in fact, actually happen.
Is the lightest of all the elements?
Hydrogen is the lightest of all elements. According to the Periodic Table, its atomic weight is 1.00794 u, even lighter than helium.
Can an atom of two different elements have the same mass number?
Yes. The mass number is basic to the different elements, even more useful than the atomic number. (Unless it is an isotope. Isotopes have a different amount of neutrons than the basic element atom which makes a difference in mass number too. So, a difference in mass numbers doesn't always mean it is a different element.)
Why zero group elements are mono atomic?
Atoms of these elements do not combine with other atoms, even atoms of the same element, because their valence electron shells are full.
Do all elements have the same atomic weight?
No they are all different and even some atoms of the same element have different weights
How atomic mass related isotope?
It isn't, as such. Isotopes of the same element have different numbers of neutrons, and neutrons have a mas of one Atomic Mass unit (amu). So isotopes have different atomic masses, but being told the number of neutrons any isotope has, will not enable you to say what element or atomic mass it had, unless you remembered the details for every single isotope. Even then different elements can have the same number of neutrons. Isotopes do get named after their atomic mass however - uranaium 235 has an atomic mass of 235, for instance.
