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An element has the electronic configuration
1s2 2s2 2p6 3s2 3p6 3d8 4s2.
What will be its position in.the periodic table?
  • a)
    Period 4, Group 10
  • b)
    Period 2, Group 2
  • c)
    Period 4, Group 2
  • d)
    Period 2, Group 8
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
An element has the electronic configuration1s2 2s2 2p6 3s23p6 3d8 4s2....
n = 4 hence, element lies in 4th period.
Group number = ns + (n - 1)d = 2 + 8 =10
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Most Upvoted Answer
An element has the electronic configuration1s2 2s2 2p6 3s23p6 3d8 4s2....
The given electronic configuration of the element is 1s2 2s2 2p6 3s23p6 3d8 4s2. Let's analyze this configuration to determine the element's position in the periodic table.

1. Identify the highest energy level (period):
The highest energy level can be determined by looking at the last filled shell. In this case, the last filled shell is the 4th shell (4s2), so the element belongs to the 4th period.

2. Identify the valence electrons (group):
The valence electrons are the electrons in the outermost shell. In this case, the outermost shell is the 4th shell, and it contains 2 electrons in the 4s subshell. Therefore, the element belongs to group 2.

3. Determine the position in the periodic table:
Based on the determined period and group, we can locate the element in the periodic table. The periodic table is organized in periods (rows) and groups (columns). Periods represent the number of energy levels while groups represent the number of valence electrons.

The correct answer is option A: Period 4, Group 10.

Explanation:
- The element belongs to the 4th period because its highest energy level is the 4th shell.
- The element belongs to Group 10 because it has 2 valence electrons in the 4s subshell.

By considering both the period and group, we can accurately determine the element's position in the periodic table.
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Read the passage given below and answer the following questions:The d block elements are the 40 elements contained in the four rows of ten columns (3-12) in the periodic table. As all the d block elements are metallic, the term d-block metals is synonymous. This set of d-block elements is also often identified as the transition metals, but sometimes the group 12 elements (zinc, cadmium, mercury) are excluded from the transition metals as the transition elements are defined as those with partly filled d or f shells in their compounds. Inclusion of the elements zinc, cadmium and mercury is necessary as some properties of the group 12 elements are appropriate logically to include with a discussion of transition metal chemistry. The term transition element or transition metal appeared to derive from early studies of periodicity such as the Mendeleev periodic table of the elements. His horizontal table of the elements was an attempt to group the elements together so that the chemistry of elements might be explained and predicted. In this table there are eight groups labeled I-VIII with each subdivided into A and B subgroups. Mendeleev recognized that certain properties of elements in Group VIII are related to those of some of the elements in Group VII and those at the start of the next row Group I. In that sense, these elements might be described as possessing properties transitional from one row of the table to the next.In the following questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion (

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An element has the electronic configuration1s2 2s2 2p6 3s23p6 3d8 4s2.What will be its position in.the periodic table?a)Period 4, Group 10b)Period 2, Group 2c)Period 4, Group 2d)Period 2, Group 8Correct answer is option 'A'. Can you explain this answer?
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