<span>Cr3+ O2- ; the formula is Cr2O3 ( criss cross)</span>
Moseley established a more accurate periodic table by closer determination of atomic numbers. Through the results of his measurements of the wavelengths of the X-ray spectral lines of a number of elements which showed that the ordering of the elements by atomic number.
Answer:
The answer is 213121119.94. Please mark me brainliest if I helped.
Answer:
helium is the smallest element and francium is the largest
A. The pH indicates how acidic or basic a
solution is.
