2. Atoms & Elements

Why does sodium readily lose an electron while chlorine readily gains one during the formation of sodium chloride?

Which of the following statements is always true about an anion?

Which of the following elements would you expect to form a cation?

Which of the following pairs of ions represent isoelectronic species?

What is formed when a neutral atom gains one or more electrons?

What is the charge of the ammonium ion (NH_4)?

Why do Group 1 elements most often form ions with a +1 charge?

Which of the following ions is isoelectronic with Ar?

When forming ions, does calcium (Ca) lose or gain electrons?

What is the charge of a chloride ion?

An ion that consists of 7 protons, 6 neutrons, and 11 electrons has a net charge of ________.

Which of the following correctly identifies the cation and anion present in MnCl4?

When sulfur forms ions, what type of ion does it become?

Which of the following occurs when chlorine forms an ion?