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IfZ= 3, what would be the valency of the...

IfZ= 3, what would be the valency of the element ? Also, name the element

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If z = 3, then its electronic configuration is 2, 1
`therefore` Its valency = 1
The name of this element is lithium.
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SWAN PUBLICATION-STRUCTURE OF THE ATOM -EXERCISE
  1. What are the limitations of Rutherford's model of the atom ?

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  2. Describe Bohr's model of atom.

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  3. Compare all the proposed models of atom given in the chapter 3 of the ...

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  4. Summarize the rules for writing of distribution of electrons in variou...

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  5. Define valency by taking examples of silicon and oxygen.

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  6. Define the terms nucleus, nucleons, atomic number, mass number, isotop...

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  7. Na^+ has completely filled K and L shells. Explain.

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  8. If bromine atom is in the form of say isotopes "35^79Br (49.7%) and "...

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  9. The average atomic mass of a sample of an element X is 16.2 u, what ar...

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  10. IfZ= 3, what would be the valency of the element ? Also, name the elem...

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  11. Composition of the nuclei of two atomic species X and Y are given as u...

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  12. (true/false) J.J. Thomson proposed that the nucleus of an atom contain...

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  13. (true/false) A neutron is formed by an electron and a proton combining...

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  14. (true/false) The mass of an electron is about 1/2000 times that of pro...

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  15. (true/false) Isotope of iodine is used for making tincture iodine, whi...

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  16. Rutherford's alpha-particle scattering experiment was responsible for ...

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  17. Isotopes of an element have

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  18. Number of valence electrons in Cl-ion are :

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  19. Which one of the following is a correct electronic configuration of so...

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  20. Complete the following table : {:("Atomic No.","Mass No.","Number","...

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