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Which chemical symbols in row 4 of the periodic table do not match up with their elements names

3 answers

In row 4 (the fourth period) of the periodic table, the chemical symbols and their corresponding element names are mostly straightforward. However, there are a couple of symbols that do not match intuitively with their element names. Here’s the list of elements in row 4 along with their symbols:

  1. K - Potassium
  2. Ca - Calcium
  3. Sc - Scandium
  4. Ti - Titanium
  5. V - Vanadium
  6. Cr - Chromium
  7. Mn - Manganese
  8. Fe - Iron (from the Latin "ferrum")
  9. Co - Cobalt
  10. Ni - Nickel
  11. Cu - Copper (from the Latin "cuprum")
  12. Zn - Zinc
  13. Ga - Gallium
  14. Ge - Germanium
  15. As - Arsenic
  16. Se - Selenium
  17. Br - Bromine
  18. Kr - Krypton

The symbols that do not match the current English names of the elements are:

  • Fe for Iron (from Latin "ferrum")
  • Cu for Copper (from Latin "cuprum")

These symbols are derived from Latin names rather than the English names of the elements.

K, Mn, Kr
K, Cr, Zn
K, Fe,Cu
K, Ni, As

It seems like you are asking to identify the sets of chemical symbols and whether they include symbols that do not match with their element names in row 4 of the periodic table. Based on the previous discussion, the symbols that differ from their corresponding element names (because they derive from Latin) are Fe for Iron and Cu for Copper.

Now, let’s analyze each of your sets:

  1. K, Mn, Kr

    • K - Potassium
    • Mn - Manganese
    • Kr - Krypton
    • None of these symbols differ from their element names.

  2. K, Cr, Zn

    • K - Potassium
    • Cr - Chromium
    • Zn - Zinc
    • None of these symbols differ from their element names.

  3. K, Fe, Cu

    • K - Potassium
    • Fe - Iron (Latin "ferrum")
    • Cu - Copper (Latin "cuprum")
    • Both Fe and Cu differ from their element names in English.

  4. K, Ni, As

    • K - Potassium
    • Ni - Nickel
    • As - Arsenic
    • None of these symbols differ from their element names.

The set that contains symbols not matching their element names is K, Fe, Cu.