Class 10SciencePeriodic Classification of ElementsMix Examples - Periodic Classification of Elements
DifficultStudy 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.
(N/A) $(i)$ Element $E$ (Carbon group,valency $4$) forms only covalent compounds.
$(ii)$ Element $D$ is in Group $13$ (Period $3$),which is Aluminum $(Al)$. It is a metal with a valency of $3$.
$(iii)$ Element $B$ is in Group $15$ (Period $2$),which is Nitrogen $(N)$. It is a non-metal with a valency of $3$.
$(iv)$ $D$ is bigger in size than $E$. Across a period from left to right,the atomic size decreases due to an increase in effective nuclear charge.
$(v)$ Elements $C$ and $F$ belong to Group $18$,which are known as Noble gases.
$(ii)$ Element $D$ is in Group $13$ (Period $3$),which is Aluminum $(Al)$. It is a metal with a valency of $3$.
$(iii)$ Element $B$ is in Group $15$ (Period $2$),which is Nitrogen $(N)$. It is a non-metal with a valency of $3$.
$(iv)$ $D$ is bigger in size than $E$. Across a period from left to right,the atomic size decreases due to an increase in effective nuclear charge.
$(v)$ Elements $C$ and $F$ belong to Group $18$,which are known as Noble gases.
Explore More
Similar Questions
Study the variation in the atomic radii of Group $I$ elements given below and arrange them in an increasing order.
$(i)$ Name the elements which have the smallest and the largest atoms.
Group $I$ elements $Li: 52\, pm, Na: 61\, pm, K: 231\, pm, Rb: 244\, pm, Cs: 262\, pm$
$(ii)$ How does the atomic size vary as you go down a group?
$(i)$ Name the elements which have the smallest and the largest atoms.
| Group $I$ elements | $Li: 52\, pm, Na: 61\, pm, K: 231\, pm, Rb: 244\, pm, Cs: 262\, pm$ |
$(ii)$ How does the atomic size vary as you go down a group?
Medium
View SolutionThe electrons in the atoms of four elements $A, B, C$ and $D$ are distributed in three shells having $1, 3, 5$ and $7$ electrons in the outermost shell respectively. State the period in which these elements can be placed in the modern periodic table. Write the electronic configuration of the atoms of $A$ and $D$ and the molecular formula of the compound formed when $A$ and $D$ combine.
Medium
View SolutionThe following table shows elements represented by the letters $A, B, C, D, E, F, G$ and $H$.
Group $1$ $2$ $13$ $14$ $15$ $16$ $17$ $18$ Element $A$ $B$ $C$ $D$ $E$ $F$ $G$ $H$
$(i)$ Which of the elements has the atomic size:
$(a)$ biggest and $(b)$ smallest?
$(ii)$ Which element has valency:
$(a)$ $3$ and $(b)$ zero?
| Group | $1$ | $2$ | $13$ | $14$ | $15$ | $16$ | $17$ | $18$ |
| Element | $A$ | $B$ | $C$ | $D$ | $E$ | $F$ | $G$ | $H$ |
$(i)$ Which of the elements has the atomic size:
$(a)$ biggest and $(b)$ smallest?
$(ii)$ Which element has valency:
$(a)$ $3$ and $(b)$ zero?
Medium
View SolutionWhich of the given elements $A, B, C, D$ and $E$ with atomic numbers $2, 3, 7, 10$ and $30$ respectively belong to the same period?
Medium
View SolutionDescribe the basic character of the oxides of third period elements across the period from left to right.
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