State the modern periodic law.

Important Questions on Periodic Classification of Elements (The Periodic Table)

EASY

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>FORMATIVE ASSESSMENT QUESTIONS FOR CCE>Q 2

Mention the main features of the long form of the periodic table.

EASY

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>FORMATIVE ASSESSMENT QUESTIONS FOR CCE>Q 3

Write the electronic configuration of $\mathrm{Mg} (\mathrm{Z}=12)$and predict its group number and period number in the modern periodic table.
 

EASY

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>FORMATIVE ASSESSMENT QUESTIONS FOR CCE>Q 4

Name the elements of period $1$ of long form of the periodic table.

EASY

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>FORMATIVE ASSESSMENT QUESTIONS FOR CCE>Q 5

Write the number of elements in period $2$ of the periodic table.
 

EASY

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>FORMATIVE ASSESSMENT QUESTIONS FOR CCE>Q 6

An element $\mathrm{X}$ belongs to period $3$ and group $17$ of the periodic table. Name its valence shell and write the number of electrons in its valence shell.
 

EASY

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>FORMATIVE ASSESSMENT QUESTIONS FOR CCE>Q 7

There are $6$ electrons in the outermost $\mathrm{M}$-shell of an element. Predict the period and group in the periodic table to which this element may belong.

MEDIUM

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>FORMATIVE ASSESSMENT QUESTIONS FOR CCE>Q 8

Lanthanoids and actinoids are placed in separate rows at the bottom of the periodic table. Give the reason for this arrangement.

EASY

10th CBSE

IMPORTANT

Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>FORMATIVE ASSESSMENT QUESTIONS FOR CCE>Q 9

Write the trends in the valency of elements in a group.