Elements X and Y with atomic numbers 18 and 20, respectively, are argon (Ar) and calcium (Ca). Despite having the same mass number of 40, they are different elements because they have different numbers of protons in their nuclei; argon has 18 protons, while calcium has 20. The fact that their mass numbers are the same suggests they can exist as isotopes or in a specific isotopic form under certain conditions, but in this case, they are simply different elements with different properties.
I think that the ionic radii decrease
Isotopes of an element have the same number of protons in their nuclei (same atomic number) but different numbers of neutrons, resulting in different mass numbers. This difference in neutron content gives each isotope unique physical properties such as stability, radioactivity, and atomic mass.
Element 114 is named as FLEROVIUM and 116 as LIVERMORIUMThey are named in honour of Flerov Laboratory of Nuclear Reactions and Lawrence Livermore National Laboratory.
La has atomic number 57.Ac has atomic number 89.They both are first elements of lanthanoids and actinoids group respectively.
The elements with atomic numbers between 95 and 140 include the actinides and the beginning of the transactinides. This range starts with americium (95) and goes up to unquadquadium (or flerovium, 114), followed by elements like copernicium (112) and nihonium (113), with the atomic numbers continuing through to oganesson (118). Beyond 118, the elements from atomic numbers 119 to 140 are predicted but not yet discovered or officially recognized.
Oxidation numbers in Fe2O3 are respectively: Fe => +3 and O => -2
I think that the ionic radii decrease
The lowest and highest prime numbers between 1 and 100 are 2 and 97 respectively.
No relationship.
Numbers
They are all numbers
Number theory
number theory
Ratio
The square numbers between 50 and 60 are 49 and 64, corresponding to the squares of 7 and 8, respectively. However, there are no square numbers that fall strictly between 50 and 60. Therefore, there are no square numbers in that range.
They are all different ways of representing the same thing: a relationship between two numbers.
Electron configuration is the arrangement of elements according to their increasing atomic numbers whiles period is the arrangement of elements according to the increasing number of valence electrons.