Explanation:
The given data is as follows.
Energy needed for 1 mole = 279.7 kJ = 
= 279700 J
Therefore, energy required for 1 atom will be calculated as follows.

= 
As relation between energy and wavelength is as follows.
E = 
where, h = planck constant = 
c = speed of light = 
= wavelength
Therefore, putting given values into the above formula as follows.
E = 
=
=
or, =
m
= 428 nm
Thus, we can conclude that the maximum wavelength of light that can remove an electron from an atom on the surface of lithium metal is 428 nm.
B.5 as the electronic configuration is 2.5. 2 on the first shell abd 5 on the valency or most outer sgell.
Answer:
water
Acidity and basicity are usually determined in a solvent. The strongest acid in the solvent is always the conjugate acid of the solvent and the strongest base is the conjugate base of the solvent. So, in water, the strongest acid is H3O+ and the strongest base is OH- (conjugate base of water).
Answer:
3.68 grams per cubic centimeter
Explanation:
The remaining 90% transforms into Hydrogen and Oxygen. The remaining 90% is recombined to maker larger molecules. I think