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Mandarinka [93]
3 years ago
13

What is the relationship between two elements X and Y whose atomic number is 18 and 20 respectively, but their mass numbers rema

in same as 40?​
English
1 answer:
noname [10]3 years ago
6 0

Answer:

The elements are Isobars.

Explanation:

  • If two elements have different atomic numbers, but same atomic mass they are called isobars.
  • Here,X and Y have atomic number 18 and 20 ,but have the same atomic mass .So, they are clearly isobars.
  • They have differing atomic numbers because the no. of protons in each element is different.
  • But,they end up having the same atomic mass because they have enough neutrons to equate the sum total of nucleons between them.
  • Isobars are present in different regions of the periodic table.
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