The first ionization energy of an atom depends on:
Correct answer: D. All of the above
- A. Charge on nucleus
- B. Screening effect
- C. Electronic configuration
- D. All of the above
Explanation
Ionization energy, also called ionization potential is the amount of energy required to remove an electron from an isolated atom or molecule. This energy is usually expressed in kJ/mol. It depends on the charge of the nucleus, shielding effect, and electronic configuration.The greater the charge on the nucleus, the more tightly the outer electrons are held, thus more heat energy is required to remove an electron from the atom.The greater the shielding/screening effect on the outer electrons, the less tightly they are held by the nucleus, thus less energy is required to remove an electron.The greater the distance from the nucleus (the electronic configuration), the lesser the force of nuclear attraction and the higher the ionization energy.
This question appeared on the ETEA MDCAT 2015 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Periodic Properties and Trends questions
Which one of the following does not exist?
Which statement is incorrect about ionization energy?
Which one of the following is most ionic?
XYZ are the elements in the same short period of the periodic table the oxide of X is amphoteric the Exide of Y is basic and the Exide of Z is acidic what is the order of increasing atomic number for these elements?
Which ion is stable in aqueous solution ?
Chlorine gas dissolves in water to some extent to give: