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  2. Dividing line between metals and nonmetals - Wikipedia

    en.wikipedia.org/wiki/Dividing_line_between...

    This line has been called the amphoteric line, [2] the metal-nonmetal line, [3] the metalloid line, [4] [5] the semimetal line, [6] or the staircase. [2] [n 1] While it has also been called the Zintl border [8] or the Zintl line [9] [10] these terms instead refer to a vertical line sometimes drawn between groups 13 and 14.

  3. Metallic mean - Wikipedia

    en.wikipedia.org/wiki/Metallic_mean

    The term "bronze ratio" (=) (Cf. Golden Age and Olympic Medals) and even metals such as copper (=) and nickel (=) are occasionally found in the literature. [ 2 ] [ 3 ] In terms of algebraic number theory , the metallic means are exactly the real quadratic integers that are greater than 1 {\displaystyle 1} and have − 1 {\displaystyle -1} as ...

  4. Properties of metals, metalloids and nonmetals - Wikipedia

    en.wikipedia.org/wiki/Properties_of_metals...

    The only metal having an ionisation energy higher than some nonmetals (sulfur and selenium) is mercury. [citation needed] Mercury and its compounds have a reputation for toxicity but on a scale of 1 to 10, dimethylmercury ((CH 3) 2 Hg) (abbr. DMM), a volatile colourless liquid, has been described as a 15. It is so dangerous that scientists have ...

  5. List of chemistry mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_chemistry_mnemonics

    A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.

  6. Report: New York population could shrink by millions in ...

    www.aol.com/news/report-york-population-could...

    (The Center Square) — New York's population could decline by more than 2 million people over the next 25 years as fewer people are born in the state and more people move out, according to a new ...

  7. All India Secondary School Examination - Wikipedia

    en.wikipedia.org/wiki/All_India_Secondary_School...

    All India Secondary School Examination, commonly known as the class 10th board exam, is a centralized public examination that students in schools affiliated with the Central Board of Secondary Education, primarily in India but also in other Indian-patterned schools affiliated to the CBSE across the world, taken at the end of class 10.

  8. The US still has not had a woman leader – here are the ...

    www.aol.com/us-still-not-had-woman-100042106.html

    The first woman was elected to lead a country 64 years ago. Here’s a look at where, and when, women have secured national leadership positions since then.

  9. Trump Organization plans a Trump Tower in Saudi Arabia, Eric ...

    www.aol.com/news/trump-organization-plans-trump...

    "I have no interaction with Washington, D.C. I want no interaction with Washington, D.C.," Eric Trump said when asked about conficts of interest.