<span>The PCl3F2 and PF5 have no dipole moment. In PF5 the 5 polar bonds cancel out. In PCI3F2 the 3 CI atoms make a triangle and the angle between them is 120 and they cancel out. the 2 F atoms each go to a side of this triangle and make vertical line to the surface of Chlorines because F is more electronegative and smaller.</span>
The medulla oblongata is the center of the brain responsible for circulation and respiration. It helps regulate breathing, digestion, sneezing, swallowing, and heart and blood vessel function.
Whildlife centers are made to preserve the lion population.
Answer:
- An element is a pure substance that cannot be broken down into a simpler form.
- All elements are listed on the periodic table of elements.
- An element symbol begins with a capital letter; if there is a second or even third letter, it is a lowercase letter
Explanation:
An element is one of the two types of pure substances i.e. substances that cannot be broken down into simpler forms. Elements are made up of only one type of atom e.g. Fe, Cl2 (two chlorine atoms).
All known or discovered chemical elements are represented on the periodic table. In an order of increasing atomic number, elements are arranged from left to right on the periodic table.
The symbol of an element begins with a first letter written in capital letters while the subsequent letters can be written in lower cases. For example, Fe, Cu, Hg, Zn etc.
I am pretty sure your answer would be D.decomposer :)