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- Multiple ChoicePlease save your changes before editing any questions.
Which has the GREATER electronegativity?
Ag
P
- Multiple ChoicePlease save your changes before editing any questions.
Which has the LARGER radius?
F
Br
- Multiple ChoicePlease save your changes before editing any questions.
Which atom has the LOWER ionization energy?
Al
Cl
- Multiple ChoicePlease save your changes before editing any questions.
When Zeff increases, the nucleus attraction
towards electrons become
Weaker
Stronger
Remain the same
- Multiple ChoicePlease save your changes before editing any questions.
Across a period from left to right , atomic radius
decreases
increases
increases, then decreases
decreases, then increases
- Multiple ChoicePlease save your changes before editing any questions.
Going down the group, the atomic radius of elements increases. Why is that so?
the number of shell (n) increases
Shielding effect increases
Nucleus attraction towards valence electrons weaker
All of the above
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Down the group, the first ionisation energy (IE1) .....
increases
decreases
Remain the same
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Across the period, the electronegativity .....
decreases
increases
remain the same
increases, then decreases
- Multiple ChoicePlease save your changes before editing any questions.
What is the tendency of an atom to attract electrons towards itself?
atomic radius
ionization energy
shielding
Electronegativity
- Multiple ChoicePlease save your changes before editing any questions.Which is larger... P or P3- ?P3- because it gains an energy levelP3- due to extra electron repulsionP because it loses an energy levelP because of extra electron repulsion
- Multiple ChoicePlease save your changes before editing any questions.Why does ionization energy decrease going down a group?Adding more energy levels makes the ve- further from the nucleusThere are more valence electrons in the outer shellThere are more protons in the nucleusThere are less protons in the nucleus
- Multiple ChoicePlease save your changes before editing any questions.Which is smaller... Mg or Mg2+ ?Mg because it gains an energy levelMg due to extra electron repulsionMg2+ because of extra electron repulsionMg2+ because it loses an energy level
- Multiple ChoicePlease save your changes before editing any questions.Which statement best describes the elements circled.The IE increases across a groupThe IE increases across a periodThe IE decreases across a groupThe IE decreases across a period
- Multiple ChoicePlease save your changes before editing any questions.
What happens to atomic radius across a period?
the atoms get bigger because the nucleus is bigger as more protons are added
the atoms get bigger because there are more ve-
the atoms get smaller because with more attraction to the extra protons, the e- cloud moves closer to the nucleus
- Multiple ChoicePlease save your changes before editing any questions.Which of the following is true?Electronegativity increases from right to left across a periodAtomic Radii decrease from left to right across a periodIonization energy increases from left to right across a periodOxidation numbers increase from right to left across a period
- Multiple ChoicePlease save your changes before editing any questions.What is the definition of ionization energythe energy released when adding an electronthe energy release when the electrons falls from excited statethe energy required to remove a protonthe energy required to remove outermost electron
- Multiple ChoicePlease save your changes before editing any questions.Why does it take energy to remove electrons?Because it is attracted to the nucleusBecause it is attracted to other electronsBecause it is trapped in an orbitalBecause it does not want to move
- Multiple ChoicePlease save your changes before editing any questions.Which of the following would require the greatest ionization energy?BrClIF
- Multiple ChoicePlease save your changes before editing any questions.
As you look from left to right across a period, electronegativity
increases
decreases
- Multiple ChoicePlease save your changes before editing any questions.Electronegativity is...how good an atom is at attracting electronsthe ability of an atom to lose electronsthe energy required to remove an electron from a specific atomhow easy it is to make friends.