What is the general trend in electronegativity and atomic radius across Period 2?

Electronegativity increases and atomic radius decreases.

Rubidium and cesium have similar chemical properties because the atoms of both elements have

one electron in the outermost shell

What is the trend in electronegativity and first ionization energy across Period 3?

Electronegativity and first ionization energy both increase

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Periodicity

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A review of the trends and patterns found in the #periodictable of elements for #SL #Chemistry

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Answers

1
Which two elements have the most similar chemical properties?
beryllium and magnesium
hydrogen and helium
phosphorus and sulfur
potassium and strontium
2
What is the general trend in electronegativity and atomic radius across Period 2?
Both electronegativity and atomic radius decrease
Both electronegativity and atomic radius increase
Electronegativity increases and atomic radius decreases.
Electronegativity decreases and atomic radius increases.
3
The elements in Period 4 on the Periodic Table are arranged in order of increasing
atomic number
atomic radius
number of occupied shells of electrons
number of valence electrons
4
Which group on the Periodic Table has elements that do not to bond with other elements?
Group 1
Group 18
Group 2
Group 17
5
Which property decreases as we move down Group 17?
electronegativity
atomic radius
melting point
atomic mass
6
The elements on the Periodic Table are arranged in order of increasing
number of valence electrons
mass number
number of isotopes
atomic number
7
Which elements have the most similar chemical properties?
aluminum and bromine
oxygen and sulfur
argon and silicon
boron and carbon
8
All elements on the modern Periodic Table are arranged in order of increasing
number of neutrons per atom
atomic mass
number of protons per atom
molar mass
9
Which list of symbols represents non-metals, only?
B, Al, Ga
C, Si, Ge
Li, Be, B
P, S, Cl
10
Rubidium and cesium have similar chemical properties because the atoms of both elements have
two electrons in the outermost shell
one electron in the outermost shell
one neutron in the nucleus
two neutrons in the nucleus
11
What is the trend in electronegativity and first ionization energy across Period 3?
Electronegativity and first ionization energy both decrease
Electronegativity increase, first ionization energy decrease
Electronegativity and first ionization energy both increase
Electronegativity decrease, first ionization energy increase

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