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Why are some of the atomic weights on the periodic table whole numbers within parenthesis?
Elements that have their atomic weights in parentheses are unstable and radioactive, some of these will decay in less than a second. The Atomic Mass in the parentheses is the most stable isotope of the element.
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The elements in the periodic table goes accoring to?
In the modern form of periodic table, all elements are arranged in increasing order of their atomic numbers. The periodic properties of elements are functions of their atomic weights.
Why is the periodic table arranged in order atomic weight?
The periodic table is arranged in order of atomic number, not atomic weight. This is because the properties of elements are determined by the number of protons in the nucleus, which is the atomic number. Atomic weight is not used because it can vary due to isotopes of an element.
What is a number in parenthesis on a periodic table?
The number in parenthesis on the periodic table represents the atomic mass of an element. It is the weighted average mass of the isotopes of that element, taking into account the abundance of each isotope.
What is the periodic law?
Periodic Table of elements.
What is modern periodic law?
The modern periodic law states that, The properties of the elements are the periodic function of there atomic number not atomic weights.
Does the periodic table gives the mass number of the most common isotopes of an element?
The periodic table give the atomic numbers and the atomic weights of chemical elements.
The elements in the periodic table goes accoring to?
In the modern form of periodic table, all elements are arranged in increasing order of their atomic numbers. The periodic properties of elements are functions of their atomic weights.
Why is the periodic table arranged in order atomic weight?
The periodic table is arranged in order of atomic number, not atomic weight. This is because the properties of elements are determined by the number of protons in the nucleus, which is the atomic number. Atomic weight is not used because it can vary due to isotopes of an element.
What is a number in parenthesis on a periodic table?
The number in parenthesis on the periodic table represents the atomic mass of an element. It is the weighted average mass of the isotopes of that element, taking into account the abundance of each isotope.
Why are the elements 94 through 110 in the periodic table whole numbers?
1. All the atomic numbers are whole numbers. 2. If you think to atomic weight of heavy radioactive elements (atomic numbers from 93 to 118) is a rule of IUPAC to indicate in square parenthesis, [], the atomic mass of the most stable or known isotope.
What is the periodic law?
Periodic Table of elements.
What is modern periodic law?
The modern periodic law states that, The properties of the elements are the periodic function of there atomic number not atomic weights.
What was the periodic table first arranged by. How has this changed?
In 1869 Russian teacher and scientist Dmitri Mendeleev, presented a periodic table of the elements based on atomic weights. The current periodic table is arranged by the atomic numbers of the elements.
Arranged the elements in the periodic table according to increase in atomic weights?
Mendeleev.
What was periodic law given by mendeleeve?
The periodic law proposed by Dmitri Mendeleev states that the properties of elements are periodic functions of their atomic weights. Mendeleev used this law to create the first periodic table of elements, predicting the properties of missing elements and organizing them based on their atomic weights and chemical properties.
What is the mass of a mole of NaCl measured by?
The mass of one mole of NaCl is the sum of the atomic weights for sodium and chlorine in grams. The atomic weights are found on the periodic table.
Is the periodic table organized by atomic numbers?
The Periodic Table is.
