What is the maximum number of electrons that can be accommodated in the d-subshell?
2
6
10
14
Which block in the periodic table contains elements with valence electrons entering the s-subshell?
s-block
p-block
d-block
f-block
What is the subshell electronic configuration of Sodium (Na, Atomic Number 11)?
1s^2 2s^2 2p^6 3s^1
1s^2 2s^2 2p^5 3s^2
1s^2 2s^2 2p^7
1s^2 2s^4 2p^5
How is the period number of an element determined from its subshell configuration?
Number of valence electrons
Highest principal quantum number (shell number)
Total number of subshells
Atomic mass
What is the group number of an element with outer configuration 3s^2 3p^4?
Group 4
Group 6
Group 14
Group 16
Which block of elements generally exhibit variable oxidation states?
s-block
p-block
d-block
Noble gases
What is the oxidation state of Fe in FeCl3?
+1
+2
+3
-3
Which subshell has lower energy and is filled before 3d?
3p
4s
4p
3s
Elements in Group 18 of the periodic table are known as:
Alkali Metals
Halogens
Noble / Inert Gases
Lanthanides
What is the noble gas shorthand configuration for Chlorine (Cl, Atomic Number 17)?
[Ne] 3s^2 3p^5
[Ar] 4s^1
[He] 2s^2 2p^6
[Ne] 3s^1 3p^6