Periodic Table: Element Symbols: Videos & Practice Problems

When writing the isotopic symbol of an element, the subscript representing the atomic number of the atom can be left off (e.g. ¹⁸O instead of ¹⁸₈O). Which of the following statements explains why is this acceptable?

Choose the periodic group that has the same first letter of the element symbol and element name.

i. Group 1A

ii. Group 2A

iii. Group 3A

iv. Group 4A

v. Group 5A

Determine the symbol for the element located in group 3A and period 4

True or False. Mendeleev was able to predict with high accuracy the properties of undiscovered elements beneath Al and Si in the periodic table by observing the reaction of these elements.

True or False. Mendeleev's periodic table was organized based on the atomic radius of the elements.

True or False. There are 118 currently known elements and about 90 of them occur naturally.

Based on the periodic table, provide the chemical symbol of the element tennessine.

Among the elements in the 4th period of the periodic table, determine which elements have atomic weights that are not in order compared to their atomic numbers?

Mendeleev used the prefix eka- to predict the existence of unknown elements, eka means one in Sanskrit. For example, he predicted the existence of germanium, one element below silicon, which he named eka-silicon. Based on this observation, what would be the identity of the element that Mendeleev named eka-aluminum when he formed the periodic table?

Provide the symbol, location in the periodic table, atomic number, and classify if nonmetal, metalloid, or metal for the given element: rubidium.

Identify the pair that does not match its name to its symbol correctly.

Name the following elements with the symbols: Rh, Si, O, P

Identify the element below that does not have a symbol pertaining to its Latin name

Identify the name of the element with an atomic number of 12. 

Identify which among the categories below this element belongs to. 

• noble gas
• halogen
• alkali metal
• alkaline earth metal
• transition metal
• lanthanide metal
• actinide metal

Which of the following would result in the transformation of an atom into an atom of a different element?

What is the periodic law as introduced by Mendeleev?

How does the organization of the periodic table by increasing atomic number help in predicting undiscovered elements?

Which variable is used to represent atomic number, and how does it influence the chemical properties of an element?

Why do elements in the same group of the periodic table exhibit similar chemical properties?

What is an element symbol and how is it generally formed?