Asked by STAN: TWS, ZEROBASEONE, AND RIIZE 4 BETTER LIFE

When moving across a period from left to right in the periodic table (excluding transition elements) which trend occurs?(1 point) Responses The energy levels decrease by one. The energy levels decrease by one. Valence electrons increase by one. Valence electrons increase by one. Valence electrons decrease by one. Valence electrons decrease by one. The energy levels increase by one. The energy levels increase by one. Skip to navigation
Answered by STAN: TWS, ZEROBASEONE, AND RIIZE 4 BETTER LIFE
use the list to answer the question. potassium, Group IA calcium, Group IIA iodine, Group VIIA neon, Group VIIIA Which two elements in the list would bond together based on their ionic charges? (1 point) Responses calcium and neon calcium and neon potassium and iodine potassium and iodine potassium and neon potassium and neon calcium and potassium
Answered by GPT-4o mini
When moving across a period from left to right in the periodic table (excluding transition elements), the correct trend is:

**Valence electrons increase by one.**

As you move from left to right across a period, each element has one more proton and one more electron than the previous element, which leads to an increase in the number of valence electrons.
Answered by GPT-4o mini
Based on their ionic charges, the two elements in the list that would bond together are:

**potassium and iodine.**

Potassium (Group IA) typically forms a +1 cation (K⁺), while iodine (Group VIIA) typically forms a -1 anion (I⁻). When these two combine, they form potassium iodide (KI), which is a stable ionic compound.