Write the electronic configuration of an element T 17 35 . What is the group number of T?

The electronic configuration of a given element T is 2 , 8 , 7 . The group number of T is 17 group ( VIIA ). Fluorine, Chlorine, Bromine, Iodine, Astatine, and Tennessine are the elements of this group. This group is also called halogens.

Write the electronic configuration of an element T 17 35 . What is the period number of T?

The electronic configuration of an element T is 2 , 8 , 7 . The number of shells indicate period number. There are three shells in T i.e., K , L and M . Hence, the element T is present in period 3 .

Write the electronic configuration of an element T 17 35 . How many valence electrons are there in an atom of T?

The electronic configuration of an element T is 2 , 8 , 7 . In element T, the number of valence electrons are 7 . The valency of an element is 1 . Valence electron is a negatively charged particle, located in the outermost shell of an atom, that can be transferred to or shared with another atom.

Write the electronic configuration of an element T 17 35 . What is the valency of T?

The electronic configuration of an element T is 2 , 8 , 7 . Valency depends on the number of electrons in the outermost shell (i.e. valence shell). If the number of electrons present in the outermost shell is 1, 2, 3 or 4, then their valency is 1, 2, 3 or 4 respectively. If the number of electrons present in the outermost shell is 5, 6 or 7, then their valency is 8 - 5 = 3 , 8 - 6 = 2 and 8 - 7 = 1 respectively. So, the valency of T is 1 .

Write the electronic configuration of an element T 17 35 . Is it a metal or a non-metal?

The electronic configuration of an element having atomic number 17 is 2 , 8 , 7 . It gains one electron to complete its octet structure and form anion. Anions are usually non-metallic in nature. Hence, the element is non-metal.

Write the electronic configuration of an element T 17 35 . State number of protons and neutrons in T.

The electronic configuration of an element T is 2 , 8 , 7 . Chlorine consists of 17 protons, 17 electrons, and 18 neutrons. Elemental chlorine gas is a yellow-green gas at room temperature and has a pungent odour similar to bleach even at very low concentrations.

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Concise Chemistry Class 9>Chapter 5 - The Periodic Table>EXERCISE 5(B)

S P Singh Solutions for Chapter: The Periodic Table, Exercise 2: EXERCISE 5(B)

Author:S P Singh

S P Singh Chemistry Solutions for Exercise - S P Singh Solutions for Chapter: The Periodic Table, Exercise 2: EXERCISE 5(B)

Attempt the practice questions on Chapter 5: The Periodic Table, Exercise 2: EXERCISE 5(B) with hints and solutions to strengthen your understanding. Concise Chemistry Class 9 solutions are prepared by Experienced Embibe Experts.