Podcast
Questions and Answers
Which property of the elements changes systematically across a Period from left to right and from top to bottom of a Group?
Which property of the elements changes systematically across a Period from left to right and from top to bottom of a Group?
- First ionisation energy (correct)
- Number of valence electrons
- Atomic mass
- Electronegativity
Which subatomic particles are attracted by the positively charged nucleus of an atom?
Which subatomic particles are attracted by the positively charged nucleus of an atom?
- Quarks
- Electrons (correct)
- Neutrons
- Protons
What happens to an atom when an electron is removed from it?
What happens to an atom when an electron is removed from it?
- It becomes a neutral atom
- It becomes a positive ion (correct)
- It becomes a negative ion
- It becomes a radioactive atom
Which element has the highest first ionisation energy?
Which element has the highest first ionisation energy?
Which property of the elements is represented by the vertical columns in the Periodic Table?
Which property of the elements is represented by the vertical columns in the Periodic Table?
Flashcards
First ionization energy
First ionization energy
The energy required to remove one electron from a neutral gaseous atom in its ground state.
Electrons
Electrons
Negatively charged particles found in the electron cloud of an atom.
Positive ion
Positive ion
An atom that has lost one or more electrons, carrying a positive charge.
Oxygen
Oxygen
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Number of valence electrons
Number of valence electrons
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