Chemistry Standard X Part 1>Chapter 1 - Periodic Table and Electronic Configuration>Exercise>Q ●

HARD

10th Kerala Board

IMPORTANT

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If the subshell wise electronic configuration of an atom is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2}$ , find the answer to the following:

How can the subshell electronic configuration be written in a short form?

Important Questions on Periodic Table and Electronic Configuration

EASY

10th Kerala Board

IMPORTANT

Chemistry Standard X Part 1>Chapter 1 - Periodic Table and Electronic Configuration>Exercise>Q ●

Write the sub-shell electronic configuration of beryllium and find the block to which it belongs to.

MEDIUM

10th Kerala Board

IMPORTANT

Chemistry Standard X Part 1>Chapter 1 - Periodic Table and Electronic Configuration>Exercise>Q ●

Write the sub-shell electronic configuration of iron and find the block to which it belongs to.

MEDIUM

10th Kerala Board

IMPORTANT

Chemistry Standard X Part 1>Chapter 1 - Periodic Table and Electronic Configuration>Exercise>Q ●

Write the sub-shell electronic configuration of argon and find the block to which it belongs to.

HARD

10th Kerala Board

IMPORTANT

Chemistry Standard X Part 1>Chapter 1 - Periodic Table and Electronic Configuration>Exercise

What is the relation between the number of electrons present in the last ‘s’ sub-shell and their group number?

HARD

10th Kerala Board

IMPORTANT

Chemistry Standard X Part 1>Chapter 1 - Periodic Table and Electronic Configuration>Exercise>Q ●

When the s block elements react, do they donate or accept electrons?

EASY

10th Kerala Board

IMPORTANT

Chemistry Standard X Part 1>Chapter 1 - Periodic Table and Electronic Configuration>Exercise>Q ●

How many electrons are donated by the first group elements in chemical reactions?

EASY

10th Kerala Board

IMPORTANT

Chemistry Standard X Part 1>Chapter 1 - Periodic Table and Electronic Configuration>Exercise>Q ●

How many electrons are donated by the second group elements in a chemical reaction?

HARD

10th Kerala Board

IMPORTANT

Chemistry Standard X Part 1>Chapter 1 - Periodic Table and Electronic Configuration>Exercise>Q ●

Suppose that $1^{st}$ and $2^{nd}$ group elements are represented by the symbols X and Y. Complete the given table.

Group	Valency	Oxidation state	Symbol of ions	Chemical formula of oxides
$1^{st}$ group $[X]$	$1$	$+ 1$	-	$X_{2} O$
$2^{nd}$ group $[Y]$	$2$	-	$Y^{2 +}$	-