What is the excited state of Sodium, Boron, Calcium, Fluorine, Iron, Aluminum, Cobalt, and Nitrogen (Pls help Im confused) (In expanded form)

Rank the following elements by increasing atomic radius: Carbon, aluminum, oxygen, potassium.

Oxygen, Carbon, Aluminum, oxygen, potassium.

Rank the following elements by increasing electronegativity: Sulfur, oxygen, neon, Aluminum.

Neon, aluminum, sulfur, oxygen.

Why does fluorine have a higher ionization energy than iodine?

Energy is required to move an electron, and ionization decreases as you go down a group.

a. they are both space stations

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1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.