Helium Reason As ionization potential increases across a period (from left to right) and decreases down a group hence helium will have the highest ionization potential among the elements of…
Sodium Reason As atomic size decreases across a period (from left to right) and increases down a group hence sodium will have the largest atomic size from the elements of…
Cl (Chlorine) Reason As electronegativity increases across a period (from left to right) and Ar is an inert element hence, Cl will have the highest value of electronegativity among the…
Group 2, Period 4 Reason — Period is determined by the number of shells of the element and group is determined by the number of valence electrons hence, element X…
Fluorine Reason Electron affinity of neon is zero because it is an inert element hence fluorine has higher electron affinity amongst the two.
Be (Beryllium) Reason Nuclear charge increases down a group and among Be and Mg, Be is on top of Mg hence Be will have lower nuclear charge.
F (Fluorine) Reason Nuclear charge increases across a period (from left to right) and fluorine lies at the right side of the periodic table hence it has maximum nuclear charge.
Li (Lithium) Reason As the number of shells increases as we move down a group and Li lies in period 2 and is at top among the given elements hence…
Nitrogen Reason As atomic size decreases across a period (from left to right) and nitrogen lies at the right side of the periodic table, hence it has least size.
Sodium is a stable element having neutron/proton ratio around 1 (approximately). Reason (a) No. of protons (p) = 11 (b) No. of neutrons (n) = 23 - 11 = 12…