Question

Analyse the following statements and choose the correct option.

1. Statement I: All isotopes of a given element show the same type of chemical behaviour.
2. Statement II: The chemical properties of an atom are controlled by the number of electrons in the atom.

• A. None of these
• B. All are correct
• C. i only correct
• D. ii only correct

Answer 1

Answer:

B. All are correct

Both statements are TRUE. Isotopes have the same chemical behavior due to the same number of electrons, and an atom's chemical properties are determined by its electron count.

Detailed Explanation:

1. Isotopes and Chemical Behavior: Isotopes are variants of the same element with different numbers of neutrons. Despite this difference, isotopes exhibit identical chemical behavior. This is because chemical properties are determined by the number of electrons, particularly valence electrons, which remain unchanged among isotopes.

2. Electron Count and Chemical Properties: The number of electrons in an atom, especially the arrangement of valence electrons, dictates its chemical properties. Electrons participate in chemical bonding, and their configuration influences reactivity, electronegativity, and the ability to form ions. Therefore, atoms with the same number of electrons, such as isotopes of the same element, display the same chemical behavior.