I want to thank your team (Jeff) for finding a new writer when you were unable to reach my existing writer to revise my paper. I appreciate your professionalism and efforts. Thanks
The horizontal rows in the periodic table are called periods.
The horizontal rows in are periods, while the vertical rows are called groups.
The elements moving from left to right in “periods” have increasing atomic numbers. These atomic numbers represent the total number of protons and electrons in the neutral atom as it exists.
Oxygen has an atomic number of 8 which means there are 8 protons in the nucleus and 8 electrons orbiting the nucleus. This balance keeps oxygen as a neutral element as you see it on the periodic table.
The columns 1-18 are groups or families. These elements are grouped by commonalities. For example, group 18 consists of the “noble gases.” These elements (helium, neon, argon, krypton, xenon, radon) all have full outer electron shells or 8 valence electrons. They all exist on different “rows” or periods but exist as one big family based on similarities.
Show more
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more