The subject is Chemistry, focusing on the periodic table and its elements.

The subject is Chemistry, focusing on the periodic table and its elements.

Answer: The subject is Chemistry, focusing on the periodic table and its elements.

Explanation: The questions relate to the organization of the periodic table, the classification of elements, and key concepts such as electronegativity and ionization energy. Understanding the periodic table is essential for identifying the properties and behaviors of elements.

Steps:

  1. Metal and Non-Metal Elements:
  • Metals are typically found on the left side and in the center of the periodic table, while non-metals are located on the right side. The dividing line is often represented by a zigzag line starting from Boron (B) down to Polonium (Po).
  1. Horizontal Rows (Periods):
  • The horizontal rows are called periods. There are 7 periods in the periodic table.
  1. Vertical Columns (Groups):
  • The vertical columns are called groups or families. There are 18 groups in the periodic table.
  1. Ionization Energy:
  • The amount of energy required to remove an electron from a neutral atom is known as ionization energy.
  1. Transition Metals:
  • Transition metals are found in the central block (groups 3-12) of the periodic table.
  1. Metalloids:
  • Metalloids are located along the zigzag line that separates metals and non-metals. Common metalloids include B, Si, Ge, As, Sb, and Te.
  1. Noble Gases:
  • Noble gases are found in Group 18 and are called so because they are inert and do not readily react with other elements.
  1. Transition Element:
  • The transition element among the options is d. Mn (Manganese).
  1. Electronegativity:
  • Electronegativity is the tendency of an atom to attract electrons in a chemical bond.
  1. Highest Electronegativity:
  • The element with the highest electronegativity is Fluorine (F).
  1. Lowest Ionization Energies:
  • The elements with the lowest ionization energies are typically found in Group 1 (alkali metals).
  1. Chemically Similar to Oxygen:
  • The element that is chemically most similar to oxygen is e. F (Fluorine).
  1. Electron Behavior:
  • Metal ions will lose electrons to become cations. Non-metals will gain electrons to become anions.
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