Question

Identify the elements that correspond to the following atomic numbers. Label each as either anoble gas, a halogen, an alkali metal, an alkaline earth metal, a transition metal, a lanthanidemetal, or an actinide metal.

a. 17
b.4
c. 63
d. 72
e. 2
f. 92
g. 55

Short answer

The elements corresponding to the atomic number can be identified and labelled.

Step-by-step solution

Different views of periodic table

The given diagram represents the different views of periodic table for the atomic numbers. The first diagram represents the short form of elements and their number. The second diagram represents the periodic table breakdown using element type. It can be used for the label identification of each element.

Elements called halogens

The element has the atomic number of 17 comes as Chlorine (Cl). This is present in the group of 7A and these elements are called Halogens. Hence, Chlorine is halogen.

Elements called alkaline earth metals

The element which has atomic number of 4 is called Be or Beryllium. It is present in 2A and these elements are called Alkaline earth metal.

Elements called lanthanide series

The element which has atomic number of 63 is called europium or Eu. This is present in Lanthanide series.

Elements called Transition metals

The element which has atomic number of 72 is Hf or Hafnium. This is present in 4B and called Transition elements.

Elements called noble gases

The element which has atomic number of 2 is He or Helium. This is present in 8A and called noble gases.

Elements called actinide metals

The element which has atomic number of 92 is U or Uranium. This is present in Actinide series and called actinide metals.

Elements called alkaline earth metals

The element which has atomic number of 55 is caesium or Cs. This is present in 1A and these elements called alkali metals.