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If the valence shell electronic configuration of an element is 3s^2 3p^1, in which block of the periodic table is it placed?

Monjur Alahi

If the valence shell electronic configuration of an element is 3s2 3p1, in which block of the periodic table is it placed?


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Salim Ahmed Kawsar

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The element having valence shell electronic configuration 3s2 3p1 must be placed in the p - block of the periodic table as its last electron enters in p-subshell (3p).

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A block of weight 9.8N is placed on a table. The table surface exerts an upward force of 10N on the block. Assume `g=9.8m//s^(2)`.

Correct Answer - B::D Since `vec(a)_(1)nevec(a)_(2)` there is slipping between the two `f = mu N`

2 Answers 3 views
The atomic number of an element is 16. What is the group number of this element in periodic Table?

Option : C. 16 

2 Answers 1 views
If the valence shell electronic configuration is ns^2 np^5, the element will belong to :

Option : b. halogens

2 Answers 1 views
What are the valence electrons? For s-block and p-block elements show that number of valence electrons is equal to its group number.

Electrons present in the outermost shell of the atom of an element are called valence electrons. 3Li is an s-block element and its electronic configuration is 1s22s1. Since it has one...

2 Answers 1 views
In the long form of the periodic table, ________ group elements can release maximum amount of energy by the addition of electron into is valence shell

Correct Answer - VII

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If number of electrons in M-shell is half of K-shell then atomic number and name of element. 

B) 11, Sodium

2 Answers 1 views
l = 0 — i) d – sub shell , 1 = 1 — ii) s – sub shell  , 7 = 2 — iii) f – sub shell 

C) a → ii, b → iv, c → i, d → iii

2 Answers 1 views
Nitrogen is the element of group-VA of the periodic table. Which of the following is the atomic number of the next element in the group?

Correct option is  C) 15

2 Answers 1 views
How many s – block and p block elements are there in the third period of the periodic table ? 

Correct option is  D) 2, 6

2 Answers 1 views
AH2 is formed when element A reacts with hydrogen. Then the number of electrons in valence shell of A are generally 

Correct option is  A) 2

2 Answers 3 views

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