In terms of atomic radius, which is the correct order of elements when ordered largest to smallest?
(5 Points)
K, Ca, Ge, Se
Se, K, Ca, Ge,
Ge, Ca, K, Se
K, Ca, Se, Ge

Read the given expression. x = number of protons − number of core electrons which of the following explains the identity of x and its trends across a period? x is the effective nuclear charge, and it remains constant across a period. x is the screening constant, and it remains constant across a period. x is the effective nuclear charge, and it increases across a period. x is the screening constant, and it increases across a period.

What is the volume occupied by 10.0 dm3 of gas at standard pressure after it has been compressedat constant temputure to 500.0 kpa?

Why is carbon ideal for making different compounds?