
How many valence electron Arsenic have?
Answer
488.7k+ views
Hint:The periodic table is defined as a table in which all the discovered chemical elements are organized by atomic numbers, from the element starting with the least atomic number i.e hydrogen, to the element with the maximum atomic number, oganesson. The atomic number of an element is known as the number of protons that are present in the nucleus of that particular element’s atom.
Complete answer:
A periodic table consists of seven horizontal rows and 18 vertical groups.
ELECTRONIC CONFIGURATION OF ELEMENTS AND THE PERIODIC TABLE: We know that an electron in an atom is characterised by a set of four quantum numbers (n, I, m and s) where the main energy level of the shell is denoted by the principal quantum number (n). The electrons get filled up respectively into different subshells which are s, p, d and f inside an atom. The way electrons are distributed into various subshells of an atom is actually the electronic configuration. The location of any particular element in the modern periodic table is characterized by the quantum numbers of the last orbital which gets filled. Here we will discuss the direct relation between the electronic configuration of the element and its location in the periodic table.
As Arsenic is present in group 15, so it will have 5 valence electrons.
Note:
The value of n is indicated by the period or, for the outermost or valence shell. In other words, a successive period in the periodic table is associated with the filling of the next higher principal energy level like n = 1, n = 2, n = 3 refers to the filling of the first, second, third and higher principal energy levels. It can be readily observed that the number of elements in each period is twice the number of atomic orbitals available in the energy level that is being filled.
Complete answer:
A periodic table consists of seven horizontal rows and 18 vertical groups.
ELECTRONIC CONFIGURATION OF ELEMENTS AND THE PERIODIC TABLE: We know that an electron in an atom is characterised by a set of four quantum numbers (n, I, m and s) where the main energy level of the shell is denoted by the principal quantum number (n). The electrons get filled up respectively into different subshells which are s, p, d and f inside an atom. The way electrons are distributed into various subshells of an atom is actually the electronic configuration. The location of any particular element in the modern periodic table is characterized by the quantum numbers of the last orbital which gets filled. Here we will discuss the direct relation between the electronic configuration of the element and its location in the periodic table.
As Arsenic is present in group 15, so it will have 5 valence electrons.
Note:
The value of n is indicated by the period or, for the outermost or valence shell. In other words, a successive period in the periodic table is associated with the filling of the next higher principal energy level like n = 1, n = 2, n = 3 refers to the filling of the first, second, third and higher principal energy levels. It can be readily observed that the number of elements in each period is twice the number of atomic orbitals available in the energy level that is being filled.
Recently Updated Pages
Master Class 11 Business Studies: Engaging Questions & Answers for Success

Master Class 11 Economics: Engaging Questions & Answers for Success

Master Class 11 Accountancy: Engaging Questions & Answers for Success

Master Class 11 Computer Science: Engaging Questions & Answers for Success

Master Class 11 English: Engaging Questions & Answers for Success

Master Class 11 Maths: Engaging Questions & Answers for Success

Trending doubts
The flightless birds Rhea Kiwi and Emu respectively class 11 biology CBSE

1 litre is equivalent to A 1000mL B 100cm3 C 10mL D class 11 physics CBSE

A car travels 100 km at a speed of 60 kmh and returns class 11 physics CBSE

Name the Largest and the Smallest Cell in the Human Body ?

Explain zero factorial class 11 maths CBSE

In tea plantations and hedge making gardeners trim class 11 biology CBSE
