Answer:
Which of the following statements best describes an element?
A) a material consisting of only one type of atom
B) a material that has consistent physical properties
C) a material with more than one type of atom
D) a material that has consistent chemical properties
Periodic Table:
A useful tool used by scientists is the periodic table. In the periodic table, we find that the elements are arranged in terms of increasing atomic number Z and by the distinct patterns in electron configuration. The rows of the periodic table are called periods. A period contains elements with the same core electron configuration. The columns are groups. In a given group, the elements contain the same number of outer shell electrons called valence electrons.
Answer and Explanation:
The correct choice is A) a material consisting of only one type of atom.
Elements are pure substances that cannot be broken down further by physical means. Any given element only contains one type of atom. For instance, a sample of He gas is composed of He atoms.
B and D are false as elements in the same group are able to exhibit similar physical or chemical properties.
Explanation:
here it is
