Groups
Periods
Trends
Mendeleeve
Elements
100
How many electrons does an atom generally need in its outer level to be the most stable?
An atom generally needs 8 electrons in its outer level to be the most stable. (Helium is an exception with 2)
100
What is the element with the highest electronegativity value?
The element with the highest electronegativity value is FLOURINE
100
Draw diagram that best represents the relationship between the diameter of a sodium atom and the diameter of a positive sodium ion?
the sodium (Na) atom should be larger than the sodium (Na) cation (positive charge)
100
Identify the period and group of the element that has the electron configuration [Ne]3s^2 3p^3.
period 3, group 5A
100
What is the correct symbol, number of protons, and number of electrons for Indium?
In, 49 protons, 49 electrons
200
A(n) _____ is an atom that has a positive or negative charge.
A(n) __ION___ is an atom that has a positive or negative charge.
200
Compared with the electronegativities of the elements on the left side of a period, the electronegativities of the elements on the right side of the same period tend to be ____.
Compared with the electronegativities of the elements on the left side of a period, the electronegativities of the elements on the right side of the same period tend to be __HIGHER__.
200
How can you know how many valence elctrons are in an atom by looking at a Bohr Diagram?
you look at the outer most ring.
200
What is the energy required to remove an electron from an atom called?
ionization energy
200
Name the an element in the same period as phosphorus?
Sodium (Na) - Magnesium (Mg) - Aluminum (Al) - Silicon (Si) - Sulfur (S) - Chlorine (Cl) - Argon (Ar) Any of the above are in the same period as Phosphorus (P)
300
Elements that are characterized by the filling of the p sub orbitals are in groups ____.
Elements that are characterized by the filling of the p sub orbitals are in groups __3A through 8A__.
300
How does atomic radius change from left to right across a period in the periodic table?
It tends to decrease
300
Which of the following elements has the smallest atomic radius? Barium? Polonium? Magnesium? Sulfur?
SULFUR has the smallest atomic radius
300
What is the noble gas electron configuration of the element in group 4A and period 4 of the periodic table?
[Ar] 4s^2 3d^10 4p^2
300
Draw a diagram that best represents the group and period trends in atomic radii on the periodic table?
Generally decreasing from left to right ---> Generally increasing from top to bottom \|/
400
Of the elements Pt, V, Li, and Kr, which is a nonmetal?
Kr is a nonmetal
400
To what category of elements does an element belong if it is a poor conductor of electricity?
the category of elements an element belongs to if it is a poor conductor of electricity is : NONMETALS
400
Which of the following elements has the smallest ionization energy? Magnesium? Calcium? Potassium? Sodium?
POTASSIUM has the smallest ionization energy
400
The modern periodic table is arranged in order of increasing atomic ____.
The modern periodic table is arranged in order of increasing atomic __NUMBER__.
400
As you move from left to right across the second period of the periodic table, what is the trend
Ionization Energy Increases ~OR~ Atomic Radii Decreases ~OR~ Electronegativity Increases.
500
What are the majority of the elements?
the majority of the elements are : METALS
500
Elements in the same group have the same_____.
Elements in the same group have the same__number of valence electrons___.
500
What element has the electron configuration 1s^2 2s^2 2p^6 3s^2 3p^4?
Sulfur (S)
500
What element in the second period has the largest atomic radius?
Lithium (Li)
500
What is the element with the lowest electronegativity value? Rhodium? Calcium? Chlorine? Cesium?
CESIUM has the lowest electronegative value
M
e
n
u