NEET · Chemistry · Periodic Table & Periodicity doubts
11 doubts found
What does “Atomic radius trend” actually mean in Periodic Table & Periodicity, and why does it matter for NEET?
atomic size decreases across a period (more nuclear pull) and increases down a group (new shells).
I keep getting “Atomic radius trend” questions wrong in Periodic Table & Periodicity. What's the trap?
reversing the across-a-period trend.
What does “Ionization energy” actually mean in Periodic Table & Periodicity, and why does it matter for NEET?
the energy to remove the outermost electron; it rises across a period and falls down a group.
I keep getting “Ionization energy” questions wrong in Periodic Table & Periodicity. What's the trap?
ignoring small dips (e.g. B<Be, O<N) caused by sub-shell stability.
What does “Electronegativity” actually mean in Periodic Table & Periodicity, and why does it matter for NEET?
an atom's tendency to attract shared electrons; fluorine is the highest.
I keep getting “Electronegativity” questions wrong in Periodic Table & Periodicity. What's the trap?
assuming metals have high electronegativity.
What does “Metallic character” actually mean in Periodic Table & Periodicity, and why does it matter for NEET?
the tendency to lose electrons; it decreases across a period and increases down a group.
I keep getting “Metallic character” questions wrong in Periodic Table & Periodicity. What's the trap?
confusing metallic character with electronegativity (they're opposites).
What is the difference between atomic radius and ionization energy?
As atomic radius decreases across a period, ionization energy increases — smaller atoms hold their electrons more tightly.
What is the difference between metals and non-metals?
Metals lose electrons easily (low ionization energy, form cations); non-metals gain electrons (high electronegativity, form anions).
What is the difference between group and period?
A group is a vertical column (same valence electrons, similar properties); a period is a horizontal row (same number of shells).