With the increase in atomic number in period
Metallic character decreases
Metallic character increases
Chemical reactivity decreases
Chemical reactivity increases
On moving horizontally across a period, the number of electrons in the outermost shell increases from ___ to
2, 8
2, 18
1, 8
1, 18
The most metallic element in the fifth period is
Silver
Rubidium
Gold
Rhodium
Arrange F, Cl, O, N in the decreasing order of electronegativity -
O > F > N > Cl
F > N > Cl > O
Cl > F > N > O
F > O > N = Cl
Which of the following is the correct order of relative size?
I- > I+ >I
I- > I > I+
I > I+> I-
I+ > I- > I
The element with smallest size in the 4th period is
Chlorine
Iodine
Fluorine
Bromine
The element with the largest size in the second period is
Lithium
Sodium
Oxygen
Arrange S, O and Se in ascending order of electron affinity
Se < S < O
Se < O < S
S < O < Se
S < Se < O
Which of these things you will not find in the periodic table on the wall?
Element Name and Symbol
Atomic weight
Atomic Orbital Radius
Atomic Number
The properties of the elements, as well as the formulae and properties of their compounds depend in a periodic manner on the atomic weight of the elements. This periodic law was given by
J.Lothar Meyer
John A.R. Newlands
Doberneir
D.I. Mendeleev
