The following represents a period in the periodic table with hypothetical symbols of elements: Group 1 2 13 14 15 16 17 18 Element A B C D E F G I Which element has the highest atomic number?

The element I will have the highest atomic number. It belongs to group 18 of the periodic table. It is a noble gas. It is found at the rightmost corner of the periodic table.

The following represents a period in the periodic table with hypothetical symbols of elements: Group 1 2 13 14 15 16 17 18 Element A B C D E F G I Which is the most inactive element?

The element I is the most inactive element. This is because, it is a noble gas. Noble gases are chemically inert as they have a completely filled stable octet electronic configuration.

The following represents a period in the periodic table with hypothetical symbols of elements: Group 1 2 13 14 15 16 17 18 Element A B C D E F G I Which element has the strongest metallic character?

Across a period, the metallic character decreases as the tendency to gain electrons or the electronegativity increases across a period. That is, the metallic character decreases from the element A to I . Therefore, the element A will have the strongest metallic character.

The following represents a period in the periodic table with hypothetical symbols of elements: Group 1 2 13 14 15 16 17 18 Element A B C D E F G I Arrange the elements C , D , E and F in the decreasing order of their atomic radii.

Across a period, the atomic size decreases as the effective nuclear charge increases across a period. Hence, the atomic radii decreases across a period. Here, for the given elements, the atomic radii decreases from A to I . Therefore, the elements C , D , E and F can be arranged in the decreasing order of their atomic radii as, C > D > E > F

The position of three elements X , Y and Z in the periodic table is given below: Group 16 Group 17 - - - Y - - X Z State whether Z is a metal or a non-metal.

The element Z is a non-metal. This is because, it is a group 17 element and hence it will have seven electrons in its outermost shell. That is, it will have a tendency to gain electrons. Generally non-metals will have the tendency to gain electrons.

The position of three elements X , Y and Z in the periodic table is given below: Group 16 Group 17 - - - Y - - X Z Will Z be larger or smaller than Y ?

The element Z will be larger than Y . This is because, while moving down the group, new shells are getting added. Therefore, the atomic size of the elements increases while moving down the group.

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Give the symbol for the most active halogen.

Important Questions on Periodic Classification Of Elements

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10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 5 - Periodic Classification Of Elements>Revision Exercise>Q 3

Give the symbol for the first noble gas in the periodic table.

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10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 5 - Periodic Classification Of Elements>Revision Exercise>Q 3

Give the symbol for a metal belonging to the third period of the periodic table.

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 5 - Periodic Classification Of Elements>Revision Exercise>Q 4

The following represents a period in the periodic table with hypothetical symbols of elements:

Group	$1$	$2$	$13$	$14$	$15$	$16$	$17$	$18$
Element	$A$	$B$	$C$	$D$	$E$	$F$	$G$	$I$

Which element has the highest atomic number?

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 5 - Periodic Classification Of Elements>Revision Exercise>Q 4

The following represents a period in the periodic table with hypothetical symbols of elements:

Group	$1$	$2$	$13$	$14$	$15$	$16$	$17$	$18$
Element	$A$	$B$	$C$	$D$	$E$	$F$	$G$	$I$

Which is the most inactive element?

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 5 - Periodic Classification Of Elements>Revision Exercise>Q 4

The following represents a period in the periodic table with hypothetical symbols of elements:

Group	$1$	$2$	$13$	$14$	$15$	$16$	$17$	$18$
Element	$A$	$B$	$C$	$D$	$E$	$F$	$G$	$I$

Which element has the strongest metallic character?

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 5 - Periodic Classification Of Elements>Revision Exercise>Q 4

The following represents a period in the periodic table with hypothetical symbols of elements:

Group	$1$	$2$	$13$	$14$	$15$	$16$	$17$	$18$
Element	$A$	$B$	$C$	$D$	$E$	$F$	$G$	$I$

Arrange the elements $C, D, E$ and $F$ in the decreasing order of their atomic radii.

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 5 - Periodic Classification Of Elements>Revision Exercise>Q 5

The position of three elements $X, Y$ and $Z$ in the periodic table is given below:

Group $16$	Group $17$
$-$	$-$
$-$	$Y$
$-$	$-$
$X$	$Z$

State whether $Z$ is a metal or a non-metal.

MEDIUM

10th CBSE

IMPORTANT

MODERN'S ABC+ OF SCIENCE CHEMISTRY>Chapter 5 - Periodic Classification Of Elements>Revision Exercise>Q 5

The position of three elements $X, Y$ and $Z$ in the periodic table is given below:

Group $16$	Group $17$
$-$	$-$
$-$	$Y$
$-$	$-$
$X$	$Z$

Will $Z$ be larger or smaller than $Y$ ?

Give the symbol for the most active halogen.

Important Questions on Periodic Classification Of Elements

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