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Electrons in shell are called valence e...

Electrons in _____ shell are called valence electrons.

A

innermost

B

outermost

C

present in nuclear

D

free

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The number of electrons in M shell is equal to the number of electrons in L shell for an element. Write the name, electronic configuration of that element and also write the values of four quantum numbers for the last electron.

In an atom the number of electrons in M - shell is equal to the number of electrons in the K and L - shell . Answer the question. Explanation : 1) Number of electrons in K-shell (1 s^(2)) = 2 Number of electrons in L-shell (2s^(2) sp^(6)) = 8 Total number of electrons in k & L shells = 10 2) Given that number of electrons in M-shell is equal to number of electrons in K& L- shells 3) Hence number of electrons in M-shell (3s^(2) 3p^(6) 3d^(2)) = 10 4) But , we know that before filling of 3d orbital 4s should be filled (4s^(2)) 5) So , electronic configuration is 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(2) 3d^(2) What is the atomic number of element ?

In an atom the number of electrons in M - shell is equal to the number of electrons in the K and L - shell . Answer the question. Explanation : 1) Number of electrons in K-shell (1 s^(2)) = 2 Number of electrons in L-shell (2s^(2) sp^(6)) = 8 Total number of electrons in k & L shells = 10 2) Given that number of electrons in M-shell is equal to number of electrons in K& L- shells 3) Hence number of electrons in M-shell (3s^(2) 3p^(6) 3d^(2)) = 10 4) But , we know that before filling of 3d orbital 4s should be filled (4s^(2)) 5) So , electronic configuration is 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(2) 3d^(2) Which is the outermost cell ?

An element has 2 electrons in its K-shell. 8 electrons in L-shell, 13 electrons in M-shell and one electron in N-shell. The element is

In an atom the number electrons in M-shell is equal to the number of electrons in the K and L Shell. Answer the following questions. How many electrons are there in its outermost shell?

In an atom the number electrons in M-shell is equal to the number of electrons in the K and L Shell. Answer the following questions. Write the electronic configuration of the element.

In an atom the number electrons in M-shell is equal to the number of electrons in the K and L shell. Answer the following questions. (AS1) Which is the outer most shell?

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VGS PUBLICATION-BRILLIANT-CHEMICAL BONDING-EXERCISE
  1. Which of the following step is not involved in the formation of MgCl2

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  2. Why is sigma - bond stronger than pi - bond ?

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  3. Electrons in shell are called valence electrons.

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  4. Assertion (A): Na-- forms an ionic bond. Reason (R): Number of valen...

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  5. Statement (A) : Group IIA elements try to lose two valence electrons f...

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  6. Assertion (A): Helium is noble gas. Reason (R) : Any species (atoms o...

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  7. Active elements : Group I :: Inactive. elements:

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  8. Group IA elements : Ionic bond : Group VII A elements :

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  9. Nacl : ionic bond : : HCL:

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  10. 11Na is: but 12Mg: di-positive ion

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  11. P: Kernel is the nucleus and all other electrons in the atom except th...

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  12. Statement (P) : Ionic bond is formed between atoms of two dissimilar e...

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  13. Highly reactive metals : alkali metals:: Highly reactive non-metals :

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  14. P: 11 NatoNa^++ e^-. Q : 11 Na + e^- to Na^+

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  15. a: Mg^2+ 2Cl^-to MgCl2 . b: 2 Cl+ 2e^-to2 Cl^-. c: Mg to Mg^(+2) + 2e^...

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  16. Which one is not an example of covalent bond ?

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  17. P: Electronic configurations of Na^+ and Ne are same. Q : Electronic c...

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  18. Assertion (A): It is not possible for one Na^+ to be attracted by one ...

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  19. Assertion (A): Mg and Na forms cations.Reason (R) : Tendency of gainin...

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  20. Transfer of sharing of electrons by an atom results in the formation o...

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