I think I have done a question like this before and i'm pretty sure your answer would be the 2nd one 1s22s22p4. I'm not 100% sure but try it at least.
Answer:
the answer is A An atomic orbital can only hold a maximum of 2 electrons, each with opposite spins
Explanation:
The temperature of water is cooler in deep oceans. The temperature there goes to 0°C to -3°C below which the water freezes. The water on the surface of the oceans and deep inside it varies because of the difference in energy of the two layers. One of the widest use of cold water is air conditioning. Cold water has a higher density than warm water. Water gets colder with profundity since chilly, salty sea water sinks to the base of the sea beds underneath the less dense hotter water close to the surface.
Diffusion is the net movement of particles from a hight concentration to a low one
<span>Since you did not show any
picture, I will be describing Dalton’s atomic theory. The scientist thought
that the atom was the smallest particle in the universe is John Dalton. He
established five theories relating atoms. One, elements are made of extremely
small particles called atoms. Two, atoms of different element have different
sizes, mass and physico – chemical properties. Three, atoms cannot be divided
further, destroyed or created. It also follows the law of conservation of
energy. Fourth, atoms can combine to form compounds. And lastly, in chemical
reaction, atoms can be combined, separated or rearranged. </span>
