Ionisation energy

A simple ion X⁺ contains eight protons. What is the electronic configuration of X⁺?

• 1s² 2s¹ 2p⁶

• 1s² 2s² 2p³

• 1s² 2s² 2p⁵

• 1s² 2s² 2p⁷

The first seven ionisation energies of an element between lithium and neon in the Periodic Table are as follows.

1310, 3390, 5320, 7450, 11 000, 13 300, 71 000

What is the outer electronic configuration of the element?

• 2s²

• 2s²2p¹

• 2s²2p⁴

  
  

• 2s²2p⁶

An element X has the following successive ionisation energies, in kJ mol^-1?

870 (1st), 1800, 3000, 3600, 5800, 7000, 13200

Which one of the following is element X?

• As

• I

• Te

• Zr

Which electronic configuration represents that of an element with the highest first ionisation energy?

• 1s²2s²2p⁶3s¹

• 1s²2s²2p³

• 1s²2s²2p⁴

• 1s²2s²2p⁶3s²3p³

From which one of the following particles is it most difficult to remove an electron?

• Cl^- (g)

• Ca⁺(g)

• Na⁺(g)

• Ar(g)

Which equation gives the definition of the first ionisation energy of bromine?

• Br(g) --> Br^-(g) - e−

• Br(g) --> Br⁺(g) + e−

• 1/2Br₂(g) --> Br^-(g) - e−

• 1/2Br₂(g) --> Br⁺(g) + e−

Which element in the Periodic table has the electron configuration 1s²2s²2p⁶3s²3p⁶3d³4s²

• a Group 2 element

• a Group 15 element

• a Group 13 element

• a transition metal

What is the electronic configuration of an ion X²⁺, which contains 44 protons?

[Ar] represents 1s²2s²2p⁶3s²3p⁶

• [Ar] 3d¹⁰4s²4p⁵4d⁵

• [Ar] 3d¹⁰4s²4p⁶4d²

• [Ar] 3d¹⁰4s²4p⁶4d⁶

• [Ar] 3d¹⁰4s²4p⁶4d⁸

Which of the following shows the listed orbitals in the atom of titanium in increasing energy order?

• 3s 3p 3d 4s

• 3s 3p 4s 3d

• 3s 4s 3p 3d

• 4s 3s 3p 3d

How many orbitals are there in the third shell (n=3)?

• 3

• 6

• 9

• 12