Chemistry- Chapter 6.2.2
Period 4 contains 18 elements. How many of these elements have electrons in the d sublevel?
16
The elements whose electron configurations ends with p(to the 5th power) in the highest occupied level belong to Group...
17
The electron configuration of aluminum, atomic number 13, is [Ne] 3s(squared), 3p(to the first power). Aluminum is in Period
3
Nitrogen's electron configuration is 1s(squared), 2s(squared), 2p(to the 3rd power). To what group does nitrogen belong?
Group 15
Magnesium, atomic number 12, has an electron configuration [Ne] 3s(squared). To what group does magnesium belong?
Group 2
Strontium's highest occupied level is 5s(squared). to what group does strontium belong?
Group 2
Titanium, atomic number 22, has the configuration [Ar] 4s(squared)3d(squared). To what group does titanium belong?
Group 4
The electron configuration of an element is [Kr] 5s(squared), 4d(to the 5th power). To what group does this element belong?
Group 7
Calcium, atomic number 20, has the electron configuration [Ar] 4s2. In what period is calcium?
Period 4
The electron configuration of cesium, atomic number 55, is [Xe] 6s1. In what period is cesium?
Period 6
The group of soft, silvery active metals, all of which have one electron in an s orbital, is known as the
alkali metals
Periods with elements filling f-sublevels.
are not assigned group numbers
Which orbitals are characteristic of the lanthanide elements?
f orbitals
The group of 14 elements in the sixth period that have occupied 4f orbitals is the
lanthanides
Elements in which the d-sublevel is being filled have the properties of
metals
The electron configurations of the noble gases from neon to radon in the periodic table end with filled
p orbitals
The alkali metals belong to the _______-block in the periodic table?
s
In Period 3 there are 8 elements. What sublevel(s) is (are) being filled?
s and p
