Which characteristic of the elements increases as you move across a period from left to right?

How do you lengthen a pattern piece? (family and consumer science, sewing)

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~