The atomic radius in periodic table ……. in periods from left to right.
a) increases
b) decreases
c) remains same
d) none of these
Explanation:In periods we move from left to right nuclear charge increases but shells remain constant so its nucleus pulls the shells and atomic size decreases.
The atomic radius in periodic table …….. in groups from top to bottom.
a) increases
b) decreases
c) remains same
d) none of these
Explanation:When we move from top to bottom number of shells increases and its size increases in groups.
The atomic radius of hydrogen in angstrom is
a) 2.35
b) 1.21
c) 0.37
d) 1.17
The one half of the distance between the nuclei of two similar atoms is ………
a) atomic radii
b) covalent radii
c) ionic radii
d) all of these
The covalent radius of F2 is ……..
a) 100pm
b) 72pm
c) 133pm
d) 143pm
The covalent radius of Cl2 is …….
a) 100pm
b) 72pm
c) 133pm
d) 143pm
