I don't understand this chemistry problem?

The question reads: Place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and sulfur.

I looked this up on a periodic table and my answer was: Rb, Se, Ca, Cl, F, S.

This is still marked wrong, and I don't know why.

asked by Amy
  1. Size increases top to bottom and decreases left to right. Therefore, Rb is the largest and F is the smallest.
    I would do this as
    Rb, Ca, Se, S, Cl, F.

    posted by DrBob222
  2. dfadf

    posted by Anonymous

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    Place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and sulfur.
  2. Chemistry

    Place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and sulfur.
  3. Atomic Size

    Place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and sulfur.
  4. Science

    The Periodic Table 1) What conclusions can be drawn about the relationship between the arrangement of elements on the periodic table and the patterns observed in their properties? :Properties of elements are related to atomic
  5. **CHEM

    Place the following elements in order of Decreasing atomic size: tellurium, bromine, argon, cesium, strontium, and selenium. would the correct ranking then be: Cs, Sr, Te, Se, Br, Ar ??? or am I still way off??
  6. CHEM**

    I just have 2 other questions that I just want to make sure on: Place the following elements in order of decreasing atomic size: tellurium, bromine, argon, cesium, strontium, and selenium. (Te, Br, Ar, Cs, Sr, Se) ~~(or...the
  7. Chemistry

    Estimate the change in energy when solid rubidium reacts with gaseous diatomic chlorine molecules. Express your answer in units of kJ/mole. Do not refer to the periodic table to solve this problem. The following data may be useful
  8. chemistry

    Estimate the change in energy when solid rubidium reacts with gaseous diatomic chlorine molecules. Express your answer in units of kJ/mole. Do not refer to the periodic table to solve this problem. The following data may be useful
  9. science

    1. When Mendeleyev arranged the elements into the periodic table, he found that elements with fell into groups on the table A. the same mass B. similar size C. Similar properties D. The same color 2. Every element has its own
  10. chemistry

    This is a lengthy problem, but I really don't understand it. Any assistance given would be greatly appreciated. An analysis was done on a rock sample to determine its rubidium content. The rubidium content of a portion of rock

More Similar Questions