IB Docs (2) Team MC test: Periodic table
Multiple choice test on 3.1 Periodic table
Use the following 'quiz' to test your knowledge and understanding of this sub-topic. You will need access to a periodic table (Section 6 of the IB data booklet).
If you get an answer wrong, read through the explanation carefully to learn from your mistakes.
Which is an s block element?
Groups 1 and 2 contain the s block elements. Their outer level containing the valence electrons is an s sub-level
Which element is a metalloid?
Metalloids lie between metal and non-metals in the periodic table and have properties in between those of metals and non-metals.
What is the electron configuration of the element with atomic number 33?
Following the aufbau principle the 33 electrons must be arranged as 1s22s22p63s23p64s23d104p3 - it is also correct to write1s22s22p63s23p63d104s24p3
Which period in the periodic table is the element with the electron configuration 1s22s22p63s23p64s23d5 located?
The element is a first row transition metal as it contains an incomplete 3d sub-level so is in period 4 as it also contains 4s electrons.
Which element is an actinoid?
Actinoids are either defined by chemical reactivity so that they are the 15 elements from Ac (Z = 89) to Lr (Z =103) or elements with an incomplete 5f sub-level in one or more of their oxidation states so that they are defined as the 14 elements with atomic numbers 90 to 103 as the electron configuration of actinium is [Rn]7s26d1, i.e. it does not contain 5f electrons.
Which row contains the correct classification of elements?
| Row | Halogen | Alkali metal | Transition metal | Noble gas |
| 1 | Ni | Na | Nb | Ne |
| 2 | Cl | Cs | Co | Ca |
| 3 | Br | Rb | Rh | Rn |
| 4 | F | Fm | Fe | Ar |
In row 1 Ni is not a halogen, in row 2 Ca is not a noble gas and in row 4 Fm is not an alkali metal.
Which factor determines the order in which elements are placed in the periodic table?
Elements are placed in order of their atomic number, i.e. the number of protons in the nucleus of an atom of the element.
Which statements are true for the elements in group 14 of the periodic table?
I. The group contains metals, metalloids and non-metals.
II. Each element contain two spin-paired electrons in one of the valence shell p orbitals.
III. Each of the periods 2 to 6 contains one Group 14 element
The elements in group 14 do all contain two valence electrons in a p sub level but they will both have the same spin and two of the three p orbitals will each contain one unpaired electron.
Which species has the same electron configuration as a K+ ion?
K+ has the configuration of argon, 1s22s22p63s23p6. Sc has the configuration 1s22s22p63s23p64s23d1. When Sc loses three electrons to form Sc3+ it will also have the configuration of argon.
An element is in group 13 and period 3 of the periodic table. How many electrons are present in the highest occupied energy level of this element?
It's electron configuration will be 1s22s22p63s23p1 so there will be 3 electrons in the third (highest occupied) level.
Twitter
Facebook
LinkedIn