In the following table, six elements A , B , C , D , E and F of the modern periodic table with atomic numbers 3 to 18 are given : 3 4 5 6 7 8 9 10 A E G 11 12 13 14 15 16 17 18 B C D F (a) Which of these is : (i) Noble gas (ii) halogen

In the above table (i) The element G with an atomic number 10 is a noble gas. This element belongs to group number 18 and the element is neon. (ii) The element F with an atomic number 17 is a halogen. This element belongs to group number 17 and the element is chlorine.

In the following table, six elements A , B , C , D , E and F of the modern periodic table with atomic numbers 3 to 18 are given : 3 4 5 6 7 8 9 10 A E G 11 12 13 14 15 16 17 18 B C D F Which of these is the most active metal in 3 rd period?

According to the above table element B with atomic number 11 is the most active metal. This is because as we move along a period the metallic character decreases. So, the element B present at the left corner of the periodic table is the most active metal in the third period.

In the following table, six elements A , B , C , D , E and F of the modern periodic table with atomic numbers 3 to 18 are given: 3 4 5 6 7 8 9 10 A E G 11 12 13 14 15 16 17 18 B C D F Identify the most electronegative element in the third period.

According to the above table, the most electronegative element in the third period is F i.e. Chlorine (Atomic number 17 ). We know that electronegativity increases from left to right in a period.

In the following table, six elements A , B , C , D , E and F of the modern periodic table with atomic numbers 3 to 18 are given : 3 4 5 6 7 8 9 10 A E G 11 12 13 14 15 16 17 18 B C D F In the compound between B and F what type of bond will be formed?

According to the periodic table, element B (Sodium) belongs to the first group and F (Chlorine) belongs to 17 th group. Group one elements are always ready to lose one electron and form a cation, whereas elements from the 17 th group need one electron to attain stability. Thus, the element B and F combine and form an ionic bond.

In the following table, six elements A , B , C , D , E and F of the modern periodic table with atomic numbers 3 to 18 are given : 3 4 5 6 7 8 9 10 A E G 11 12 13 14 15 16 17 18 B C D F What would be the nature of oxide formed by C ?

The oxide formed from element C i.e. Magnesium is basic in nature because metal oxides are mostly basic in nature. The element C belongs to the second group i.e. alkaline earth metals.

Sourabh Monga Solutions for Chapter: Periodic Classification of Elements, Exercise 3: PRACTICE QUESTIONS SET

Author:Sourabh Monga

Sourabh Monga Chemistry Solutions for Exercise - Sourabh Monga Solutions for Chapter: Periodic Classification of Elements, Exercise 3: PRACTICE QUESTIONS SET

Attempt the free practice questions on Chapter 5: Periodic Classification of Elements, Exercise 3: PRACTICE QUESTIONS SET with hints and solutions to strengthen your understanding. New Millenium Science - Chemistry Class X solutions are prepared by Experienced Embibe Experts.

Questions from Sourabh Monga Solutions for Chapter: Periodic Classification of Elements, Exercise 3: PRACTICE QUESTIONS SET with Hints & Solutions

HARD

10th CBSE

IMPORTANT

New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>PRACTICE QUESTIONS SET>Q 12

Write the electronic configuration of two elements $X$ and $Y$ whose atomic numbers are $20$ and $17$ respectively. Write the molecular formula of the compound formed when element $X$ reacts with element $Y$ . Draw the electron-dot structure of the product and also state the nature of the bond formed between both the elements.

HARD

10th CBSE

IMPORTANT

New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>PRACTICE QUESTIONS SET>Q 13

Write the number of periods and groups in the Modern Periodic Table. How does the metallic character of elements vary on moving
(a) from left to right in a period, and
(b) down a group?.
Give reason to justify your answer.

HARD

10th CBSE

IMPORTANT

New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>PRACTICE QUESTIONS SET>Q 14

What is periodicity in properties of elements with reference to the Modern Periodic Table? Why do all the elements of the same group have similar properties? How does the tendency of elements to gain electrons change as we move from left to right in a period? State the reason of this change.

MEDIUM

10th CBSE

IMPORTANT

New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>PRACTICE QUESTIONS SET>Q 15(a)

In the following table, six elements $A, B, C, D, E$ and $F$ of the modern periodic table with atomic numbers $3$ to $18$ are given :

$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$A$					$E$		$G$
$11$	$12$	$13$	$14$	$15$	$16$	$17$	$18$
$B$	$C$		$D$			$F$

(a) Which of these is : (i) Noble gas (ii) halogen

MEDIUM

10th CBSE

IMPORTANT

New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>PRACTICE QUESTIONS SET>Q 15(b)

In the following table, six elements $A, B, C, D, E$ and $F$ of the modern periodic table with atomic numbers $3$ to $18$ are given :

$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$A$					$E$		$G$
$11$	$12$	$13$	$14$	$15$	$16$	$17$	$18$
$B$	$C$		$D$			$F$

Which of these is the most active metal in $3^{rd}$ period?

MEDIUM

10th CBSE

IMPORTANT

New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>PRACTICE QUESTIONS SET>Q 15(c)

In the following table, six elements $A, B, C, D, E$ and $F$ of the modern periodic table with atomic numbers $3$ to $18$ are given:

$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$A$					$E$		$G$
$11$	$12$	$13$	$14$	$15$	$16$	$17$	$18$
$B$	$C$		$D$			$F$

Identify the most electronegative element in the third period.

MEDIUM

10th CBSE

IMPORTANT

New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>PRACTICE QUESTIONS SET>Q 15(d)

In the following table, six elements $A, B, C, D, E$ and $F$ of the modern periodic table with atomic numbers $3$ to $18$ are given :

$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$A$					$E$		$G$
$11$	$12$	$13$	$14$	$15$	$16$	$17$	$18$
$B$	$C$		$D$			$F$

In the compound between $B$ and $F$ what type of bond will be formed?

MEDIUM

10th CBSE

IMPORTANT

New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>PRACTICE QUESTIONS SET>Q 15(e)

In the following table, six elements $A, B, C, D, E$ and $F$ of the modern periodic table with atomic numbers $3$ to $18$ are given :

$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$A$					$E$		$G$
$11$	$12$	$13$	$14$	$15$	$16$	$17$	$18$
$B$	$C$		$D$			$F$

What would be the nature of oxide formed by $C$ ?

Sourabh Monga Solutions for Chapter: Periodic Classification of Elements, Exercise 3: PRACTICE QUESTIONS SET

Sourabh Monga Chemistry Solutions for Exercise - Sourabh Monga Solutions for Chapter: Periodic Classification of Elements, Exercise 3: PRACTICE QUESTIONS SET

Questions from Sourabh Monga Solutions for Chapter: Periodic Classification of Elements, Exercise 3: PRACTICE QUESTIONS SET with Hints & Solutions

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