Question

In period 2 of periodic table which element has biggest and smallest atom

Answer 1

$\bold{MODERN \: PEROIDIC \: TABLE}$

Its a table in which elements are arranged in group and periods according to their atomic number according to modern periodic law according to which "Physical and chemical properties of an element are periodic function of their atomic number".

There are peroidic properties of modern peroidic table , which means the same property after a fixed interval of time.

Example :- Atomic raduis ,ionizational potential ,electropositivity etc.

$\bold{ATOMIC \: RADIUS}$

The distance between centre of nucleus to the outermost shell of that atom is called its atomic number.

$\bold{DEPENDENCE \: OF \:ATOMIC \: RADIUS}$

◼Number of shell

If number of shell increases ,the distance between the nucleus and outermost shell increases therefore, atomic radius $\bold{increases}$.

◼Nuclear charge

Nuclear charge means attraction from the protons of nucleus .If nuclear charge increases it attracts electrons and shells towards it , therefore atomic size $\bold{decreases}$.

$\bold{ACROSS \: A \: PEROID}$

Across a peroid number of shell remains same but nuclear charge increases therefore atomic radius decreases accross a group.

$\bold{FOR \: PEROID \: 2}$

Elements of peroid 2 are

▶Lithium(Li)

▶Beryllium(Be)

▶Boron(B)

▶Carbon(C)

▶Nitrogen(N)

▶Oxygen(O)

▶Fluorine(F)

▶Neon(Neon)

So, according to above information

◼Element with largest atomic radius = Lithium (Li)

◼Element with smallest atomic radius should be neon but since neon is a noble gas which have outermost sheel completely filled with electrons which causes a force of repulsion among electrons hence the size remains larger but not more than lithium.So,

Fluorine is the element with smallest atomic radii.

Answer 2

Answer:

Explanation:

Li has the biggest atom and O has the smallest  atom.