The configuration is 1s2 . Hope I answered and helped out! :)
Answer:
geologic features like craters and mountains
Explanation:
Livor mortis refers to the bluish-purple discoloration (lividity) under the skin of the lower body parts due to gravitation of blood after death. ... Dark pinpoint spots (Tardieu spots) are seen when capillaries rupture due to increased gravitational pressure (e.g. in the legs of a hanged person)
Answer:
The option B is correct.
#in my opinion#
Explanation:
As we know that the wavelength is the length of one wave and is measured in case of longitudinal wave as the distance between two consecutive compressions or rarefactions and in case of transverse wave as distance between two consecutive crests or troughs THUS in both cases we measure the distance in the direction of the wave (parallel to the wave).
Answer : 1) CuO is a basic salt and therefore reacts with sulfuric acid to give copper (II) sulfate and water.
2) CuO is very stable and therefore does not dissociate in water and therefore cannot react with the sulfate ion in potassium sulfate.
In first case, 
Wherein when CuO was made to react with potassium sulphate it didn't had any product because CuO was not ionised by water in presence of potassium sulphate.
