Place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and sulfur.
See your post above under James. You get quicker answers if you stick to the same screen name.
Alright, let's put on our atomic-size spectacles and get sorting! Here's the order of decreasing atomic size for the elements you listed:
Rubidium, calcium, selenium, sulfur, chlorine, fluorine.
Now, don't go getting these elements mixed up with a jumbo-sized pizza or an itsy-bitsy spider. Atom sizes can be just as tricky to handle!
To order the elements in decreasing atomic size, we need to consider their positions on the periodic table. The atomic size generally decreases as you move from left to right across a period and increases as you move down a group.
Here are the elements listed in decreasing atomic size:
1. Rubidium (Rb)
2. Calcium (Ca)
3. Selenium (Se)
4. Sulfur (S)
5. Chlorine (Cl)
6. Fluorine (F)
Remember that atomic size is determined by the number of energy levels and the effective nuclear charge on the outermost electrons, among other factors.
To place the elements in order of decreasing atomic size, we need to consider their positions on the periodic table.
1. Fluorine (F) is located in the upper right corner of the periodic table in Group 17. It has the smallest atomic size among the given elements because it has the highest effective nuclear charge (due to its high atomic number) pulling the outermost electrons closer to the nucleus.
2. Chlorine (Cl) is also in Group 17, below fluorine. It is larger than fluorine but smaller than the remaining elements.
3. Selenium (Se) is a member of Group 16, located to the right of chlorine. It is larger than both chlorine and fluorine.
4. Sulfur (S) is in the same group as selenium but lower down in the periodic table. It is larger than selenium but smaller than the remaining elements.
5. Calcium (Ca) is located in Group 2, below sulfur. It has a larger atomic size than the previously mentioned elements due to the additional electron shell.
6. Rubidium (Ru) is the largest among the given elements as it is located in Group 1, the alkali metals, which have the largest atomic sizes on the periodic table.
Therefore, the order of decreasing atomic size for the given elements is:
Rubidium > Calcium > Selenium > Sulfur > Chlorine > Fluorine