3. The ground-state valence-shell configuration of a particular atom is 1s22s22p63s23p3. The...


The ground-state valence-shell configuration of a particular atom is [{MathJax fullWidth='false' 1s^22s^22p^63s^23p^3 }]. The element to which this atom belongs is a Select one: a. noble gas. b. s-block main-group element. c. p-block main-group element. d. transition element. e. inner transition element.

Element in Periodic Table

The elements present in the periodic table are according to their atomic number in increasing order. The vertical columns of the table are known as the groups and the horizontal rows are known as the periods. The element present in the groups have same valence electrons. The element present in a period have same valence shell.

Answer and Explanation: 1

Given electronic configuration:


The valence electron of the given atom present in the p-orbital, hence the element present in one of the group of the p-block.

Since the element contains 15 electrons, so it is Phosphorous atom which lies in the 15 group and the group-13 to group-18 lies in the p-block except helium.

Hence the given element belongs to p-block

option (c) is correct.

Learn more about this topic:

The Periodic Table: Properties of Groups and Periods


Chapter 3 / Lesson 1

Learn about the organization of the periodic table into groups and periods and how these differ. Also learn the history of the periodic table and its properties.

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