How does atomic size vary along period 2 from left to right and why?
A. Atomic size increases as atomic number increases
B. Atomic size increases as number of protons increases
C. Atomic size decreases as electrons added to same shell and with increase in number of protons, nuclei attracts electrons more
D. Atomic size decreases as proton has higher positive charge than negative charge on electron and thus protons pulls electrons towards nucleus.
Answer:C
How does atomic size vary along period 2 from left to right and why?
A. Atomic size increases as atomic number increases B. Atomic size increases as number of protons increases C. Atomic size decreases as electrons added to same shell and with increase in number of protons, nuclei attracts electrons more D. Atomic size decreases as proton has higher positive charge than negative charge on electron and thus protons pulls electrons towards nucleus.