The electrons in the highest principal energy level of an atom are called ______________ electrons.
Question 2
2.
Hydrogen has this many valence electrons.
Question 3
3.
Aluminum has this many valence electrons.
Question 4
4.
Iodine has this many valence electrons.
Question 5
5.
Gallium is in this row of the periodic table.
Question 6
6.
Which element is in the p-block group of elements in the periodic table(choose all that apply)?
Question 7
7.
Which of the following elements are s-block elements(choose all that apply)?
Question 8
8.
Which of the following elements are f-block elements(choose all that apply)?
Question 9
9.
Scandium is a d-block element with how many electrons in the d orbital?
Question 10
10.
Phosphorus is an p-block element with how many electrons in the p orbital?
Question 11
11.
In ___________, Antoine Lavoisier defines the chemical element, develops a list of all known elements, and distinguishes between metals and nonmetals.
Question 12
12.
In 1969, researchers at the University of Berkeley synthesize the first element heavier than the actinides it has a half-life of 4.7 seconds and is named ______________________.
Question 13
13.
In 1913, _________________________ determines the atomic number of known elements and establishes that element properties vary periodically with atomic number.
Question 14
14.
Using the periodic table, determine the group given the following electron configuration [He] 2s2.
Question 15
15.
Using the periodic table, determine the period given the following electron configuration [He] 2s2.
Question 16
16.
Using the periodic table, determine the group given the following electron configuration [Ne] 3s2.
Question 17
17.
Using the periodic table, determine the group given the following electron configuration [Ne] 3s2 3p4.
Question 18
18.
Using the periodic table, determine the period given the following electron configuration [Ne] 3s2 3p4.
Question 19
19.
Given the electron configuration of 1s2 2s2 2p6 3s2 3p5, which element does this represent?
Question 20
20.
Given the electron configuration of [Kr] 5s1, which element does this represent?