Selina Icse Concise Chemistry For Class 10>Chapter 1 - Periodic Table, Periodic Properties and Variations of Properties>Intext Questions>Q 8

HARD

10th ICSE

IMPORTANT

Earn 100

A metal $M$ forms an oxide having the formula $M_{2} O_{3}$ . It belongs to third period. Write the atomic number and valency of the metal.

Important Questions on Periodic Table, Periodic Properties and Variations of Properties

HARD

10th ICSE

IMPORTANT

Selina Icse Concise Chemistry For Class 10>Chapter 1 - Periodic Table, Periodic Properties and Variations of Properties>Intext Questions>Q 9

An element

X

belongs to third period and

17^{th}

group. State the number of valence electrons in it.

EASY

10th ICSE

IMPORTANT

Selina Icse Concise Chemistry For Class 10>Chapter 1 - Periodic Table, Periodic Properties and Variations of Properties>Intext Questions>Q 9

An element

X

belongs to third period and

17^{th}

group. State the name of the element.

EASY

10th ICSE

IMPORTANT

Selina Icse Concise Chemistry For Class 10>Chapter 1 - Periodic Table, Periodic Properties and Variations of Properties>Intext Questions>Q 9

An element

X

belongs to third period and

17^{th}

group. State the name of the family to which it belongs.

EASY

10th ICSE

IMPORTANT

Selina Icse Concise Chemistry For Class 10>Chapter 1 - Periodic Table, Periodic Properties and Variations of Properties>Intext Questions>Q 9

An element

X

belongs to third period and

17^{th}

group. Write the formula of the compound formed when

X

reacts with

{}_{13}^{27}Y

.

EASY

10th ICSE

IMPORTANT

Selina Icse Concise Chemistry For Class 10>Chapter 1 - Periodic Table, Periodic Properties and Variations of Properties>Intext Questions>Q 10

The given table shows elements with the same number of electrons in their valence shell.

Elements	$A$	$B$	$C$
Melting point	$63.0$	$180.0$	$97.0$

Arrange the elements in their increasing order of metallic character.

EASY

10th ICSE

IMPORTANT

Selina Icse Concise Chemistry For Class 10>Chapter 1 - Periodic Table, Periodic Properties and Variations of Properties>Intext Questions>Q 11

Which one of the following has the largest atomic radius?

EASY

10th ICSE

IMPORTANT

Selina Icse Concise Chemistry For Class 10>Chapter 1 - Periodic Table, Periodic Properties and Variations of Properties>Intext Questions>Q 12

Which of the following has the largest size?

EASY

10th ICSE

IMPORTANT

Selina Icse Concise Chemistry For Class 10>Chapter 1 - Periodic Table, Periodic Properties and Variations of Properties>Intext Questions>Q 13

The metals of group

II

from top to bottom are

Be, Mg, Ca, Sr

and

Ba

. Which one of these elements will form ions most readily and why?