Question

The element with atomic number 84 belongs to (1) VI group, VI period (2) I group, Vl period (3) V group, VI period (4) VI group \(\mathrm{V}\) period

Short answer

The element with atomic number 84 belongs to group VI, period VI (Option 1).

Step-by-step solution

Identify Element

Determine the element with atomic number 84. This element is Polonium (Po).

Locate Group and Period

Find Polonium in the periodic table. Polonium (Po) is located in group 16 and period 6.

Select the Correct Option

Based on the location in the periodic table, the correct option is group VI, period VI.

Key concepts

Atomic Number

The atomic number of an element is a fundamental property. It is the number of protons found in the nucleus of an atom. For example:

• Hydrogen has an atomic number of 1, meaning it has one proton.
• Carbon has an atomic number of 6, meaning it has six protons.

The atomic number is unique to each element, differentiating one element from another. In the periodic table, elements are arranged in order of increasing atomic number, from left to right and top to bottom.

Periodic Table Groups

The periodic table is divided into vertical columns called groups. Elements in the same group have similar chemical properties because they have the same number of valence electrons. For example:

• Group 1 elements (like sodium and potassium) are highly reactive metals.
• Group 18 elements (like neon and argon) are noble gases and are inert.

Each group is labeled with a number from 1 to 18. Sometimes, the groups are also named:

• Group 1: Alkali metals
• Group 2: Alkaline earth metals
• Group 16: Chalcogens
• Group 17: Halogens
• Group 18: Noble gases

For example, Polonium (Po) belongs to group 16. This means it's part of the chalcogens and shares some properties with other group 16 elements, such as oxygen and sulfur.

Element Polonium

Polonium is a rare and radioactive element. It has the atomic number 84, which means it has 84 protons in its nucleus. Interesting facts about Polonium:

• Polonium was discovered by Marie and Pierre Curie in 1898.
• Its symbol is Po, and it is located in group 16 and period 6 of the periodic table.
• Polonium is highly toxic and can be dangerous even in small amounts.
• It was named after Poland, the homeland of Marie Curie.

Polonium’s position in group 16 indicates that it has similar properties to other chalcogens, but its radioactivity makes it unique and different in applications and handling.