4. Mendeleev created the first periodic table by arranging elements in order of A. Decreasing atomic mass.
B. Increasing atomic mass.
C. increasing atomic number.
D. Increasing melting points and densities.

pls help

c

Explanation:

C is the answer for increasing Atomic number

answer: i have one answer

acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

explanation:

hope this and sorry i could only come up with one answer!

b. is the answer hoped i