Electronic configuration of some of the elements are given : Type… - Vidyadip

Question

Electronic configuration of some of the elements are given :

Type of element	Element	Atomic number	Number of electrons in shell
Metals	Sodium (Na)Magnesium (Mg)Aluminium (Al)	111213	2828283
Non-metals	Oxygen (O)Sulphur (S)Chlorine (Cl)	81617	26286287

(i) State one physical property to distinguish between metals and non-metals.
(ii) What is the nature of the bond formed when magnesium reacts with chlorine? Write the formula of the compound.
or
(ii) What is common between oxygen and sulphur? Draw the electron dot structure of $O _2$ molecule.

✓

Answer

(i) Metals are malleable and ductile while non-metals are brittle.
(ii) Ionic bond formed transfer of electrons from magnesium to chloride.
or
(ii) Both have same number of valence electron. Both belongs to the same group (Group 16) of the periodic table.

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