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honors chem
Which is not a trait of a nonmetal
What are the two liquid elements?
honors chem
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1
What are the two liquid elements?
Bromine and Mercury
Bromine, and Shemine
Xenon and Fluorine
Potassium and Calcium
2
Which is not a trait of a nonmetal
negative oxydation numbers
Poor conductors
bond with halogens to make salt
brittle
3
Elements in which the
d
-sublevel is being filled have the properties of
gas
metals
acids
helium
4
Electron Affinity ___down a group
increases
stays constant
decreases
subtracts
5
Electronegativity ____ down a group
decreases
stays constant
increases
multiplies
6
A positive ion is known as a(n)
cation
anion
ion
onion
7
Atomic radius___down a group.
increases
subtracts
decreases
polarizes
8
What reason that atomic radius generally increases with atomic number in each group of elements
The number of energy levels increases
atoms shrink
the atoms grow
the ionization energy
9
For Groups 13 through 18, the number of valence electrons is equal to the group number
minus atomic mass
+8
plus atomic number
-10
10
Cations and Anions ___across a period
subtracts
stays constant
increase
decrease
11
Atoms that have gained or lost a charge
compounds
molecules
ions
elements
12
What is an isotope?
Atoms of same element different # of neutron same #of proton
an element with only one compound
a positive or negative charged element
an ion with a neutral charge
13
What is a measure of the ability of an atom in a chemical compound to attract electrons?
electron affinity
Ionic Radius
Atomic Radius
electronegativity
14
Ionization energy ___ across a period
stays same
doubles
increases
decreases
15
Atomic radius___across a period
decreases
increases
divides
stays constant
16
Ionization energy ___ down a group
decreases
stays constant
divides
increases
17
What did Mendeleev do with organizing the periodic table?
Created the 3'd model
did it by periodic repetitionof chemical/physical properties
Father of Chemistry
Organized elements according to atomic mass
18
When an electron is acquired by a neutral atom, the energy change is called
Electronegativity
Ionization energy
Electron Affinity
Ionic Radius
19
Mosley discovered what?
Atomic mass doesn't affect elements
Atomic Number is responsible for periodicity
Founded league of scientists
Created the periodic table
20
Ionic Radii____down a group
subtracts
decreases
divides
increase
21
What did John Newlands do?
Found Atomic mass
discovered Oxygen
created a 3-d model
Octect rule
22
Halogens are the most
deactive
metallic
fragile
reactive
23
The energy required to remove an electron from an atom is the atom's
Atomic Mass
Ionic Radius
Melting Point
Ionization energy
24
As the atomic number of the metals of Group 1 increases, the ionic radius
increases
decreases
multiplies
divides
25
Which is not a trait of a metal?
Ductile
dull
combine with oxygen to make oxides
Conduct heat and electricity
26
A negative ion is knows as a
anion
element
ion
cation
27
Electron Affinity ___ across a period
increases
divides
decreases
multiplies
28
Electronegativity ____ across a period
stays constant
divides
decreases
increases
29
In a row in the periodic table, as the atomic number increases, the atomic radius generally
decreases
increases randomly
Increase
stays constant
30
what are B Si Ge As Sb Te At?
metalloids
metallic
metals
nonmetals
31
One-half the distance between the nuclei of identical atoms that are bonded together is called
Ionic Radius
Atomic Radius
Ionization energy
Electronegativity