MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 12
        
which of the following is the energy of a possible excited state of a He^+ ion?
(a) -1.09*10^-18 J
(b)-8.72*10^-19J
(c)-4.36*10^-19J
(d)-5.45*10^-19J
11 months ago

Answers : (1)

Arun
16287 Points
							

The different energy levels of an atom are given by the equation:

En = -13.6 Z2/n2 eV

Z is the atomic number. For hydrogen, Z = 1.

n = 1,2,3… and so on such that the ground state has n = 1 and the second energy level (first excited state) has n = 2.

So, for first excited state, n = 2

E = -13.6/22 = -13.6/4 = - 3.4 eV

E = -5.45 * 10^-19 joules

11 months ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Get Extra Rs. 1,590 off

COUPON CODE: SELF10


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 141 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Get Extra Rs. 276 off

COUPON CODE: SELF10

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details