Question

The less electropositive element is
1) Na 2) Be 3) Li 4) Mg
​

Answer 1

Answer:

Mg

Explanation:

Answer 2

Explanation:

modern periodic table is based on the atomic number of elements,what was the experiment which proved the significance of atomic number from the following

1)mullikan's oil drop experiment

2)moseley's work on x-ray spectra

3)Bragg's work on X-ray diffraction

4)discovery of x-rays by rongten