Flash Education

Question

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

structure of the atom CBSE Class 9

August 22, 2024

Answer

Na has atomic number 11, so its electronic configuration is = 2, 8, 1

When it gives away its outermost shell single electron it changes to Na+ =10= 2, 8

The above configuration indicates completely filled K, L shells.

Was this answer helpful?

Didn't liked the above answer ?

Text Generation Tool

💡 Some Related Questions

Atomic structure

Complete the following table.

Atomic structure

Which one of the following is a correct electronic configuration of sodium? (a) 2, 8 (b) 8, 2, 1 (c) 2, 1, 8 (d) 2, 8, 1

Atomic structure

Put tick (√ ) against correct choice and cross ( x ) against wrong choice in the following question: Number of valence electrons in Cl− ion are: (a) 16 (b) 8 (c) 17 (d) 18

Atomic structure

Put tick ( √ ) against correct choice and cross ( x ) against wrong choice in the following question: Isotopes of an element have (a) the same physical properties (b) different chemical properties (c) different number of neutrons (d) different atomic numbers

Atomic structure

Put tick (√ ) against correct choice and cross ( x ) against wrong choice in the following question: Rutherford’s alpha-particle scattering experiment was responsible for the discovery of (a) Atomic nucleus (b) Electron (c) Proton (d) Neutron

Atomic structure

For the following statements, write T for ‘True’ and F for ‘False’. (a) J.J. Thomson proposed that the nucleus of an atom contains only nucleons. (b) A neutron is formed by an electron and a proton combining together. Therefore, it is neutral. (c) The mass of an electron is about 1/2000 times that of proton. (d) An isotope of iodine is used for making tincture iodine, which is used as a medicine.

Atomic structure

Composition of the nuclei of two atomic species X and Y are given as under X Y Protons = 6 6 Neutrons = 6 8 Give the mass numbers of X and Y. What is the relation between the two species?

Atomic structure

If Z = 3, what would be the valency of the element? Also, name the element.

Atomic structure

The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes 𝑋8 16 and 𝑋8 18 in the sample?

Atomic structure

If bromine atom is available in the form of, say, two isotopes 35𝐵𝑟 79 (49.7%) and 𝐵𝑟 35 81 (50.3%), calculate the average atomic mass of bromine atom.

error: Content is protected !! 💀