According to Mendeleef’s periodic law, the elements are arranged in order of A increasing:
A. Atomic numbers
B. Decreasing atomic number
C. Increasing atomic masses
D. Decreasing atomic masses.
Answer:C
According to Mendeleef’s periodic law, the elements are arranged in order of A increasing:
A. Atomic numbers B. Decreasing atomic number C. Increasing atomic masses D. Decreasing atomic masses.