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Study the following table in which posit...

Study the following table in which positions of six elements A, B, C, D, E and F are shown as they are in the modern periodic table

On the basis of the above table, answer the following questions
Out of D and E, which is bigger in size and why?

Text Solution

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Out of D and E, D will be bigger in size because as we move from left to right in a period there is addition of extra electron in the same shell due to which electrons are pulled more closer to the nucleus.
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Study the following table in which positions of six elements A,B,C,D,E and F are shown as they are in the modern periodic table. On the basis of the above table, answer the following question : (i) Name the element which form only covalent compounds. (ii) Name the element which is a metal with valency three. (iii) Name the element which is a non-metal with valency three. (iv) Out of D and E, which is bigger in size and why ? (iv) Write the common name for the family to which the elements C and F belongs.

The following table shows the position of six elements A, B, C, D, E and F in the period table. Using the above table answer the following questions : (a) Which element will form only covalent compounds ? (b) Which element is a metal with valency 2 ? (c) Which element is a non-metal with valency of 3 ? (d) Out of D and E, which one has more atomic radius and why? (e) Write a common name for the family of elements C and F.

Identify A, B, C, D, E and F in the table given below :

By referring to the modern periodic table, find out the group to which the above elements belong.