Which statements completed with a to e will be true and which will be false? An atom of N compared to an atom of Li has a larger (greater)b. ionization energy
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Identify the elements involved: Nitrogen (N) and Lithium (Li).
Understand ionization energy: It is the energy required to remove an electron from an atom in the gaseous state.
Consider the position of N and Li in the periodic table: N is in group 15 and period 2, while Li is in group 1 and period 2.
Recall the trend in ionization energy across a period: Ionization energy generally increases across a period from left to right due to increasing nuclear charge and decreasing atomic radius.
Conclude that since N is to the right of Li in the same period, N has a greater ionization energy than Li.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Ionization Energy
Ionization energy is the energy required to remove an electron from an atom in its gaseous state. It is a key factor in determining an element's reactivity and is influenced by the atomic size and the effective nuclear charge. Generally, ionization energy increases across a period due to increased nuclear charge and decreases down a group due to increased distance from the nucleus.
Periodic Trend: Ionization Energy (Simplified) Concept 1
Atomic Structure
The atomic structure refers to the arrangement of protons, neutrons, and electrons within an atom. Elements are defined by their atomic number, which is the number of protons in the nucleus. The arrangement of electrons in different energy levels affects the atom's size and its ionization energy, with smaller atoms typically having higher ionization energies due to their electrons being closer to the nucleus.
Periodic trends are patterns observed in the properties of elements across the periodic table. Key trends include ionization energy, electronegativity, and atomic radius. For instance, as you move from left to right across a period, ionization energy generally increases, while it decreases as you move down a group. Understanding these trends helps predict the behavior of elements in chemical reactions.