Vocab 3.1&3.2 Flashcards Preview

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Flashcards in Vocab 3.1&3.2 Deck (16):
1

Atomic radius


the radius of an atom; the distance from the atomic nucleus to the outermost stable electron orbital in a atom at equilibrium; also, one-half the distance between nuclei of atoms of the same element

2

Ionization energy

Energy required to remove 1 mole of electrons from 1 mole of a gaseous atom

3

Electronegativity

Value that represents the ability of the nucleus to gain electrons (highest 4.0)

4

Electron affinity

Energy change when 1 mole of an atom gains one mole of electrons (gaseous atom)

5

Cation

Positively charged ion

6

Anion

Negatively charged ion

7

Nuclear charge

# of protons

8

Effective nuclear charge (ENC)

P-core electrons (everything but valence) the net charge an electron experiences in an atom with multiple electrons

9

Nuclear Shielding

Reduction in the ability for the valence shell to gain electrons

10

Periodic law (periodicity)

The tendency to repeat

11

Malleable

A metal that’s able to be broken

12

Ductile

Can be made into a wire

13

Allotrope

2 different molecular forms of the same element

14

Representative element

Elements in group 1-2 and last 6 groups

15

Valence electron/ valence shell

Last Pel ex 2-8-(8)

16

Reactivity

The state of being reactive. the relative capacity of an atom, molecule, or radical to undergo a chemical reaction with another atom, molecule, or compound.