Question

Element with similar chemical properties:
A. Occur only within the same period
B. Have identical atomic mass (weight)
C. Have identical number of neutrons
D. Have the same number of electrons in the outer shell

Answer 1

Hint:The primary thing about chemical properties ought to be to understand the periodic table. The columns are the family groups, putting comparative elements was the beginning point of discovering the table in the first place.

Complete answer:
The elements of a group have comparatively chemical properties yet in a period they have distinctive chemical properties. For example, Sodium, potassium, lithium, rubidium, and caesium have comparable chemical properties.
Therefore, Elements with comparable chemical properties have (D) similar number of electrons in an outermost shell as the elements in a similar group just have a similar number of electrons in the outermost shell. Comparable chemical properties are spoken to by going down any column in the periodic table, these are likewise called groups, since they have comparative properties. We later learned they have comparable valence shell structures. Two various elements have comparative chemical properties when they have similar number of valence electrons in their outermost energy level.
All the elements of a group have comparable chemical properties since they have the same no. of valence electrons in their outermost shell.

Hence, the correct option is D. Have the same number of electrons in the outer shell

Note:
Elements in similar groups (that is, in a similar column) will in general have comparative chemical properties. This idea functions admirably for group 1 (alkali metals), group 2 (alkaline earths), and groups 18 (noble gases).