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Y_Kistochka [10]
3 years ago
9

1. As elements go across from left to right in a period,

Chemistry
1 answer:
mel-nik [20]3 years ago
7 0

Answer:

decrease.

Explanation:

WHY? - As you go across a period, electrons are added to the same energy level. ... The concentration of more protons in the nucleus creates a "higher effective nuclear charge." In other words, there is a stronger force of attraction pulling the electrons closer to the nucleus resulting in a smaller atomic radius.

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