Which of the following pairs of elements is most metallic
1. Potassium or Bromine
2. Cesium or Sodium
3. Silicon or Aluminum
4. Gold or Bismuth

answer:

The answer to your question is 2. Cesium or sodium. Hope it helps!

answer:

option 2

Explanation:

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the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.