The electron configurations of two unknown elements are x and y. X: 1s2 2s2 2p6 Y: 1s2 2s2 2p6 3s2 3p5 which statement is most likely correct about the two elements

X: 2,8 = Neon

Y: 2,8,7= Chlorine

Neon has an atomic number of 10. It is referred to as a noble gas and it’s a mono atomic element.

Chlorine has an atomic number of 17. It is referred to as an Halogen. Chlorine exists in nature as a diatomic molecule.

However the question is incomplete and will need more information.

the increase of protons   hope this

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.