2. Atoms & Elements

Which group of elements in the periodic table tends to form 1+ ions?

What is the charge of the ion typically formed by barium (Ba) in ionic compounds?

Which of the following elements has the greatest number of protons in its nucleus?

Which of the following elements has the greatest atomic number?

What is the expected ionic charge of elements in Group 1A (alkali metals) when they form ions?

Which group in the periodic table contains only elements that can form anions in ionic compounds?

Which of the following elements is the most reactive?

What did Mendeleev finally insert into his periodic table to make the arrangement of elements make sense in their locations?

Which of the following statements is true regarding the number of electrons in neutral potassium (K) and neutral neon (Ne) atoms?

On the periodic table, elements that commonly form cations are typically found in which region?

Which equation correctly represents the first ionization of calcium?

Which element on the periodic table has 20 protons in its nucleus?

Which of the following elements has 16 protons?

Which group of elements is most likely to form ions with a +1 charge?