Analyse the table given below and choose the correct option regarding the atomic radii of X and Y.

Element Number of protons Number of neutrons

X 11 12

Y 12 14

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Given the element aluminium with atomic number 13 and number of neutrons 14.Find the mass number, number of protons, number of electrons and electronic configuration.

Q. The atom of an element X contains 17 protons, 17 electrons and 18 neutrons whereas the atom of an element Y contains 11 protons, 11 electrons and 12 neutrons.

(a) What type of ion will be formed by an atom of element X ? Write the symbol of ion formed.
(b) What will be the number of (i) protons (ii) electrons, and (iii) neutrons, in the ion formed from X ?
(c) What type of ion will be formed by an atom of element Y ? Write the symbol of ion formed.
(d) What will be the number of (i) protons (ii) electrons, and (iii) neutrons, in the ion formed from Y ?
(e) What is the atomic mass of (i) X, and (ii) Y ?
(f) What could the elements X and Y be ?

Complete the following table relating to the atomic structure of some elements.

$\begin{matrix} Element & Atomic & Mass & Number of & Number of & Number of Symbol & Number & Number & Neutrons & Electrons & Protons L i & 3 & 6 C l & 17 & 20 N a & 12 & 11 A l & 27 & 13 S & 32 & 16 \end{matrix}$

Q. Analyse the table given below and choose the correct option regarding atomic radius of X and Y.

Element	Number of protons	Number of neutrons
X	11	12
Y	12	14

Q. Read the given data below and identify the correct option regarding X and Y.

Atomic species	Number of electrons	Number of protons	Number of neutrons
X	8	8	8
Y	8	8	10

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Analyse the table given below and choose the correct option regarding the atomic radii of X and Y. Element Number of protons Number of neutrons X 11 12 Y 12 14

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Analyse the table given below and choose the correct option regarding the atomic radii of X and Y.

Element Number of protons Number of neutrons

X 11 12

Y 12 14