Answer:
The number of valence electrons increases from left to right.
Explanation: The number of valence electrons increases going across a period, or row in the periodic table, for example, group 1 elements have 1 valence electrons and group 2 elements have have 2.
i think 12000 is the answer
Maybe
A. 400 ml of 5.0% glucose solution
X-rays have much shorter wavelengths and higher frequencies. Likewise, red light has a longer wavelength than blue light.
I believe it is testing your hypothesis and collecting data.