Which of the follownig elements, is most electronegative ?
F
O
Ne
Na
A.
F
Fluorine is the most electronegative element of the periodic table. Its electronegativity is 4.0.
How does the ionisation energy of 1st group elements vary ?
Increases down the group
Decreases down the group
Remains unchanged
Variation is not regular
Dominance of strong repulsive forces among the molecules of the gas (Z = compressibility factor)
depends on Z and indicated by Z = 1
depends on Z and indicated by Z > 1
depends on Z and indicated by Z < 1
is independent of Z.