The Periodic Table Trends

What is the symbol for Oxygen?

• Om

• O

• Ox

• Oy

Answer explanation

The symbol for Oxygen is 'O'. This is the standard one-letter abbreviation used in the periodic table to represent the element, while the other options 'Om', 'Ox', and 'Oy' are incorrect.

Which element is represented by the symbol 'Hg'?

• Hydrogen

• Hafnium

• Helium

• Mercury

Answer explanation

The symbol 'Hg' stands for Mercury, which is a chemical element known for being a liquid metal at room temperature. The other options, Hydrogen, Hafnium, and Helium, have different symbols: H, Hf, and He, respectively.

What is the classification of Selenium (Se)?

• Actinide

• Non-metal

• Alkali Earth Metal

• Transitional Metal

Answer explanation

Selenium (Se) is classified as a non-metal. It is a member of the chalcogen group in the periodic table, which includes other non-metals like oxygen and sulfur, distinguishing it from metals and metalloids.

Which element has the symbol 'Na'?

• Neon

• Sodium

• Nitrogen

• Nickel

Answer explanation

The symbol 'Na' stands for Sodium, which is an alkali metal. Neon (Ne), Nitrogen (N), and Nickel (Ni) have different symbols, making Sodium the correct answer.

What is the symbol for Tin?

• Ti

• Tn

• Sn

• Si

Answer explanation

The symbol for Tin is 'Sn'. This is derived from the Latin word 'stannum'. The other options, 'Ti', 'Tn', and 'Si', represent Titanium, a non-existent symbol for Tin, and Silicon, respectively.

Carbon and other nonmetals are found in which area of the periodic table?

• On the right side

• In the middle column

• In the bottom rows

• On the left-most side

Answer explanation

Carbon and other nonmetals are primarily located on the right side of the periodic table, where elements like oxygen and nitrogen are also found. This distinguishes them from metals, which are on the left side.

Identify the Noble Gases.

• Helium, Neon, Argon

• Hydrogen, Oxygen, Nitrogen

• Carbon, Silicon, Germanium

• Sodium, Potassium, Rubidium

Answer explanation

The Noble Gases are a group of elements in Group 18 of the periodic table, known for their lack of reactivity. Helium, Neon, and Argon are all Noble Gases, while the other options contain reactive elements.

Potassium is classified as a -

• Noble Gas

• Alkaline Earth Metal

• Transition Metal

• Alkali Metal

Answer explanation

Potassium is classified as an Alkali Metal because it is located in Group 1 of the periodic table, characterized by having one electron in its outermost shell, which makes it highly reactive.

Which element is a Halogen?

• Fluorine

• Helium

• Sodium

• Calcium

Answer explanation

Fluorine is a Halogen, located in Group 17 of the periodic table. Helium is a noble gas, while sodium and calcium are alkali and alkaline earth metals, respectively. Thus, Fluorine is the correct choice.

What is the oxidation number of Group 1 elements?

• -1

• 0

• +2

• +1

Answer explanation

Group 1 elements, also known as alkali metals, have an oxidation number of +1. This means they tend to lose one electron during chemical reactions, resulting in a +1 charge.