1. which two pictures (a - g) show only the atoms of a single element?
1. which two pictures (a - g) show only the atoms of a single element?
Answer
Explanation:
Step1: Recall element definition
An element consists of only one - type of atom.
Step2: Analyze each picture
In picture A, all the atoms are the same type (represented by white - colored circles bonded in pairs). In picture C, all the atoms are single and of the same type (white - colored circles). In picture D, all the atoms are single and of the same type (black - colored circles). In picture H, all the atoms are the same type (white - colored circles bonded in a cluster). Pictures B, E, F, G show combinations of different types of atoms (black and white circles bonded in different ways), which represent compounds or mixtures of elements.
Answer:
A, C, D, H (if only two are required, A and C as they are the most straightforward single - element representations with single atoms or simple molecular forms of the same atom type)