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.
Answer:
The Caning of Charles Sumner, or the Brooks–Sumner Affair, occurred on May 22, 1856, in the United States Senate chamber, when Representative Preston Brooks, a pro-slavery Democrat from South Carolina, used a walking cane to attack Senator Charles Sumner, an abolitionist Republican from Massachusetts.
Answer:
the action of intervening on behalf of another.
Explanation:
Answer: a book or set of books giving information on many subjects or on many aspects of one subject and typically arranged alphabetically.
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