Electron gain enthalpy

Identify the group period and block of 3d³4s²

• d block,period 4,group 5

• s block ,period 4,group 2

• d block,period 3,group 5

Out of following which is having high Ionisation enthalpy

• N

• O

• C

What is the atomic number of element having IUPAC name unnilennium

• 107

• 109

• 108

Which of the following has lowest electron gain enthalpy

• Ne

• C

• O

f block elements are known as

• Transition elements

• Inner transition elements

• Representative elements

• Lanthanoids