Class 10SciencePeriodic Classification of ElementsMix Examples - Periodic Classification of Elements
EasyOut of $Li$ and $K$,which will have stronger metallic character and why?
(B) Potassium $(K)$ has a stronger metallic character than lithium $(Li)$.
This is because metallic character depends on the ease with which an atom can lose its valence electrons.
As we move down a group in the periodic table,the atomic size increases due to the addition of new shells.
Consequently,the valence electrons are further away from the nucleus and are held less tightly by the nuclear charge.
Therefore,$K$ can lose its valence electron more easily than $Li$,making it more metallic.
This is because metallic character depends on the ease with which an atom can lose its valence electrons.
As we move down a group in the periodic table,the atomic size increases due to the addition of new shells.
Consequently,the valence electrons are further away from the nucleus and are held less tightly by the nuclear charge.
Therefore,$K$ can lose its valence electron more easily than $Li$,making it more metallic.
Explore More
Similar Questions
The element $X$ has the following electron configuration $2, 8, 8, 2$. It means that it belongs to:
Medium
View SolutionStudy the following table in which positions of six elements $A, B, C, D, E$ and $F$ are shown as they are in the modern periodic table:
Group $\to$ $1$ $2$ $13$ $14$ $15$ $16$ $17$ $18$ Period $2$ $A$ - - - $B$ - - $C$ Period $3$ - - $D$ $E$ - - - $F$
On the basis of the above table,answer the following questions:
$(i)$ Name the element which forms only covalent compounds.
$(ii)$ Name the element which is a metal with valency three.
$(iii)$ Name the element which is a non-metal with valency three.
$(iv)$ Out of $D$ and $E$,which is bigger in size and why?
$(v)$ Write the common name for the family to which the elements $C$ and $F$ belong.
| Group $\to$ | $1$ | $2$ | $13$ | $14$ | $15$ | $16$ | $17$ | $18$ |
| Period $2$ | $A$ | - | - | - | $B$ | - | - | $C$ |
| Period $3$ | - | - | $D$ | $E$ | - | - | - | $F$ |
On the basis of the above table,answer the following questions:
$(i)$ Name the element which forms only covalent compounds.
$(ii)$ Name the element which is a metal with valency three.
$(iii)$ Name the element which is a non-metal with valency three.
$(iv)$ Out of $D$ and $E$,which is bigger in size and why?
$(v)$ Write the common name for the family to which the elements $C$ and $F$ belong.
Difficult
View Solution"Hydrogen occupies a unique position in the Modern Periodic Table". Justify the statement.
Easy
View SolutionProperties of the elements are given below. Where would you locate the following elements in the periodic table?
$(a)$ An element which is an inert gas with atomic number $2$.
$(b)$ An element whose thin oxide layer is used to make other elements corrosion resistant by the process of 'anodising'.
$(a)$ An element which is an inert gas with atomic number $2$.
$(b)$ An element whose thin oxide layer is used to make other elements corrosion resistant by the process of 'anodising'.
Medium
View SolutionJustify the following statements:
$(a)$ Cations are smaller in size than the corresponding neutral atom.
$(b)$ The size of the atom increases as we move down a group.
$(c)$ Atomic size decreases as we move across a period.
$(a)$ Cations are smaller in size than the corresponding neutral atom.
$(b)$ The size of the atom increases as we move down a group.
$(c)$ Atomic size decreases as we move across a period.
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo