a part of the periodic table has been shown below. 31. groups period 4 1. 2. 13 16 18 14 2. g. 3. d. answer the following questions on the basis of position of the elements in the above table. which element is a noble gas? a) which element is most electronegative? give reason. b) write the electronic configuration of 'd'.
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The element in group 18 = g is a noble gas
a) The most electronegative element is E
b) The electronic configuration of 'd' is 1s2,2s2,2p6,3s2,3p2.
- The elements in group 18 are called as Noble gases, according to the given data, 'g' is in group 18. So, it is a noble gas.
- The electronegativity increases as move left to right along the period, and decreases down the group.
- E is in group 17, also noble gases are not electronegative because of their octet structure. So, E being rightest group and most upper period. It has high electronegativity.
- As, the element 'd' is in 14th group and 3rd period, it will have 14 electrons in total 3 subshells.
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