PERIODIC TABLE

Periodicity of the elements in the Periodic Table refers to

• The arrangement of elements in increasing order of proton numbers

• The arrangement of elements in increasing order of neutron numbers

• The electronegativity of elements across a period

• The classification of elements based on increasing proton numbers and similar valence electronic configuration

*The first three successive ionisation energies for the element N increase gradually but the fourth ionisation energy increases sharply.

*Element N is a third period element.

*N form an amphoteric oxide.

Which of the following s electronic configuration matches the statements above?

• 1s² 2s² 2p⁶ 3s² 3p¹

• 1s² 2s² 2p⁶ 3s² 3p³

• 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹ 4s²

• 1s² 2s² 2p⁶ 3s² 3p⁶ 3d³ 4s²

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.

• decreases, increases

• increases, increases

• increases, decreases

• stays the same, increases

Which of the following elements has the smallest atomic radius?

• Sulfur [Z=16]

• Chlorine[Z=17]

• Aluminum[Z=13]

• Sodium[Z=11]

Atomic radius generally increases as we move __________.

• down a group and from right to left across a period

• up a group and from left to right across a period

• down a group and from left to right across a period

• up a group and from right to left across a period

Which block is letter C

• s - block

• p - block

• d - block

• f - block

Based on the successive ionisation energies below,how many valence electrons does the element M have?

IE₁ = 943

IE₂ = 1,950

IE₃ = 3,852

IE₄ = 5,492

IE₅ = 23,085

IE₆ = 26,791

IE₇ = 30,024

• 2

• 3

• 4

• 5

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What will be formed when Al₂O₃ reacts with NaOH?

• NaAlO + H₂O

• NaAlO₂ + H₂O

• NaAlO₃ + H₂O

• Na₃Al + H₂O

Element Q has the following electronic configuration:

1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s¹

Which of the following is true about the position of element Q in periodic table?

• Period 3, Group 1, Block s

• Period 4, Group 16, Block d

• Period 4, Group 6, Block d

• Period 4, Group 1, Block s

Tags

NGSS.HS-PS1-1

What is the tendency of an atom to attract electrons towards itself?

• atomic radius

• ionization energy

• shielding

• Electronegativity