Observe the information and answer the following questions.Name of the

1.	Observe the information and answer the following questions.Name of the ElementAtomic NumberElectronic ConfigurationSodium11[Ne] 3s1Magnesium12[Ne] 3s2Potassium19[Ne] 4s1Calcium20[Ne] 4s21) What is valency of Magnesium?2) Which element has more electro-positivity?3) Write the elements which belongs to (third) 3rd Period.4) Write the elements which belongs to 1st Group.
Answer» 1) Valency of magnesium is two. 2) Potassium (K) has more electro-positivity. 3) The elements which belongs to 3rd period are Sodium (Na), Magnesium (Mg). 4) Sodium (Na), Potassium (K) belong to 1st Group.

Observe the information and answer the following questions.Name of the ElementAtomic NumberElectronic ConfigurationSodium11[Ne] 3s1Magnesium12[Ne] 3s2Potassium19[Ne] 4s1Calcium20[Ne] 4s21) What is valency of Magnesium?2) Which element has more electro-positivity?3) Write the elements which belongs to (third) 3rd Period.4) Write the elements which belongs to 1st Group.

Answer»

1) Valency of magnesium is two.

2) Potassium (K) has more electro-positivity.

3) The elements which belongs to 3rd period are Sodium (Na), Magnesium (Mg).

4) Sodium (Na), Potassium (K) belong to 1st Group.