The element with no definite place in the periodic table is
At
H
N
Pt
Correct Answer :
B. H
Related Questions
In the Mendeleef's periodic table properties of the elements are the periodic function of their
atomic weight
atomic number
atomic volume
none of these
The smallest ion amongst the following
3.Atomic number of an element X is 34, it belongs to
IV period, VIA group
IV period, IIA group
V period, III B group
IV period, VII A group
Which of the following species have minimum size?
The general electronic configuration of s-block elements is
An element has atomic number 2. It belongs to
O group
III A group
VI group
II B group
On moving across a period from left to right the ionisation energy increases because
value of principal quantum number increases
effective nuclear charge increases
atomic size increases
nuclear charge increases
Which of the following conform both cation and anion?
I
Cl
K
F
Which of the following is not an s-block element?
Ru
Be
Fr
Rb
An atom of an element has electronic configuration , the element belongs to block
s
p
f
d
In a Lother Meyer curve sodium occurs at
bottom
peak
some point on the curve
middle of the curve
Elements in the same vertical column has same
valence shell electronic configuration
electronic configuration
atomic number of isotopes
atomic size
Which of the following has highest ionisation energy?
Be
Cl
Ba
N
Which of the following have negative electron affinity?
Kr
U
Y
Pb
Which of the following has maximum ionisation energy?
Li
Ba
Cl
Be
Elements whose atoms have incompletely filled penultimate and anti-penultimate energy levels are known as
Inner Transition elements
Representative elements
Inert elements
Noble gases
Which of the following did not find a place in Mendeleef's periodic table?
Fr
Na
Ce
CI
The differentiating electron enters in the penultimate energy level in the case of
s block ele.
p block ele.
d block ele.
f block ele.
Elements whose atoms have incompletely filled penultimate energy levels are known as
s-block elements
p-block elements
d-block elements
inert gases
Which of the following has minimum ionisation energy
Ca
In
Te
Rb
Which of the following is an inert gas?
Oxygen
Nitrogen
Argon
Hydrogen
In the periodic table on moving from left to right across a period, the metallic character of elements
increases
decreases
increases and decreases
remains the same
Second electron affinity of the elements is always
positive
negative
zero
more than first E.A.
Which of the following has maximum ionisation energy ?
Li
Be
C
B
Which of the following has minimum ionisation energy?
F
Cl
Br
I
The heaviest element is
Cs
Na
Hg
U
Ionisation energy is the amount of energy required to remove
the most loosely bound electron from an isolated gaseous atom
an electron from an atom of an element
an electron from an isolated gaseous atom
an electron from covalently bonded atom in a molecule
The element with no definite place in the periodic table is
At
H
N
Pt
Which of the following have maximum size?
A metal may have atomic number
85
32
38
2