Atomic structure

according to Bohrs when electron jumps from lower to higher orbits it will

• absorbed energy

• emit energy

• neither emit nor absorb energy

• energy remain same

Balmer series in hydrogen spectrum lies in the region:

• Ultraviolet

• Visible

• Infrared

• Microwave

What is incorrect about this orbital diagram?

• Both arrows in the 2p box should be pointing up
• There is nothing incorrect with this diagram
• In the there should only be 1 orbital in the first 2p box and one in the 2nd 2p box
• All the arrows should be pointing up.

Which element is pictured?

• neon (Z=10)

• fluorine (Z=9)

• magnesium (Z=12)

• argon (Z=18)

Which one of the following series lies in ultraviolet region:

• a)Lyman

• (b) Balmer

• (c) Paschen

• (d) Brackett

Total number of spectral regions in sunlight spectrum is:

• 4

• 6

• 7

• 8

how the value of energy of electron changes when the value of n increases.

• decreases

• increases

• remain constant

Which orbital shows a violation of Hund's Rule?

• A
• B
• C
• D

angular momentum of electron for n= 3

• 2h/pi

• 3h/2pi

• h/2pi

In case of light the packet of energy is known as

• Visible light

• photon

• erg