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Chemistry: Grade 11 > Trends > Flashcards

Flashcards in Trends Deck (13):
1

Definition of atomic radius:

Distance from nucleus to outer shell

2

When u go down a family Does the atomic radius increase or decrease:

It increases because the number of shells increase as you go down

3

Does atomic radius across a period increase or decrease:

Decreases. Even tho the number of shells is the same. There are more protons as u go across a period (more nuclear attraction)

4

Define ionization energy:

Amount of energy to remove valence electrons from a neutral atom

5

Does ionization energy in increase or decrease across a period:

Increase bc There are more protons across a period so it is harder to remove electrons (more nuclear attraction)

6

Does ionization increase or decrease down a family:

Ionization energy decreases bc the shells r further away so electrons r easier to remove (there is less nuclear attraction)

7

Electron affinity:

The amount of energy released when u add an electron to an atom

8

Does electron affinity increase or decrease across a period:

Increase bc There are more protons across a period so it is harder to remove electrons (more nuclear attraction) (search)

9

Does electron affinity increase or decrease across down a row:

Decreases because of low nuclear attraction as u go down a family (more shells mean further away)

10

Shielding affect:

The number of electrons between the outer and the electrons in he nucleus

11

Are positive ions bigger or smaller than neutral:

Smaller bc more attraction pulls electrons in

12

Are negative ions bigger or smaller than neutral:

Negative is bigger than neutral bc less attraction pulling electrons in

13

Which group has the highest electron affinity:

Halogens bc they want the most electrons