Chemistry Test 72

Result

Chemistry Test 72

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

Which of the following quantum numbers are correct for last electron of Xe :-

A
n = 4, ℓ = 3, m = +1, s = +1/2

B
n = 5, ℓ = 0, m = 0, s = +1/2

C
n = 5, ℓ = 1, m = –1, s = –1/2

D
n = 4, ℓ = 2, m = 0, s = –1/2

Solution

The last electron of Xe enters in 5p subshell. Therefore, n = 5, ℓ = 1

Xe का अंतिम इलेक्ट्राॅन 5p उपकोश में जाता है इसलिए, n = 5, ℓ = 1
Question 2
4 / -1

For how many subshells the value of n+l can be 5?

A
3

B
2

C
5

D
4

Solution

n + l = 5 for 5s, 4p, 3d
Question 3
4 / -1

How many total filled subshells are there in the inert gas of 5^th period ?

A
4

B
6

C
11

D
10

Solution

The inert gas is Xe.

वह अक्रिय गैस Xe है

⇒ 1s 2s 2p 3s 3p 3d 4s 4p 4d 5s 5p

⇒ Total subshell = 11

(कुल उपकोश)
Question 4
4 / -1

According to AuFbau principle which of the following sequence is correct :-

A
3s → 3p → 3d → 4p

B
5p → 4d → 7s → 7p

C
1s → 2s → 3d → 3s

D
4f → 7s → 6p → 6d

Solution

3s 3p 3d 4p

n + l 3+0=3 3+1 = 4 3+2=5 4+1=5