Question

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

Answer 1

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

Answer 2

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.

Answer 3

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**.