Question

what is valency??????​

Answer 1

Explanation:

valency :

valency is tge number of chemical bonds the atoms of certain elements can form .

e.g =

valency of chlorine

atomic number of chlorine = 17

configuration = (2,8,7 )

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Answer 2

$\huge\mathbb{QUESTION}$

What is valency ?

$\huge\mathbb{ANSWER}$

The valency refers to the measure of the combining capacity of an element with other atoms while forming chemical compounds. In other words, valency is the combining power of an element. Specifically it is the number of links that the element usually forms with other atoms. The valency of an element is related to the number of electrons present in the outer shell.

The electrons present in the outermost shell of an atom are called valence electrons. The valence electrons take part in any chemical reaction because the outermost orbit usually contains more energy than the electrons present in other orbits.

$\huge\mathbb{KNOW\:MORE}$

Valencies of $\sf 1^{st}$ $\sf 30$ elements $\longrightarrow$

$\begin{array}{| c | c | c |}\cline{1-3} \bf Atomic\:No. & \bf \;Elements\; & \bf \;Valency\; \\ \cline{1-3} 1 &\sf Hydrogen & 1 \\ \cline{1-3} 2 &\sf Helium & 0 \\ \cline{1-3} 3 &\sf Lithium & 1 \\ \cline{1-3} 4 &\sf Berrylium & 2 \\ \cline{1-3} 5 &\sf Boron & 3 \\ \cline{1-3} 6 &\sf Carbon & 4 \\ \cline{1-3} 7 &\sf Nitrogen & 3 \\ \cline{1-3} 8 &\sf Oxygen & 2 \\ \cline{1-3} 9 &\sf Flourine & 1 \\ \cline{1-3} 10 &\sf Neon & 0 \\ \cline{1-3} 11 &\sf Sodium & 1 \\ \cline{1-3} 12 &\sf Magnesium & 2 \\ \cline{1-3} 13 &\sf Aluminium & 3 \\ \cline{1-3} 14 &\sf Silicon & 4 \\ \cline{1-3} 15 &\sf Phosphorus & 3 \\ \cline{1-3} 16 &\sf Sulphur & 2 \\ \cline{1-3} 17 &\sf Chlorine & 1 \\ \cline{1-3} 18 &\sf Argon & 0 \\ \cline{1-3} 19 &\sf Potassium & 1 \\ \cline{1-3} 20 &\sf Calcium & 2 \\ \cline{1-3} 21 &\sf Scandium & 3 \\ \cline{1-3} 22 &\sf Titanium & 4 \\ \cline{1-3} 23 &\sf Vanadium & 5,4 \\ \cline{1-3} 24 &\sf Chromium & 2 \\ \cline{1-3} 25 &\sf Manganese & 7,4,2 \\ \cline{1-3} 26 &\sf Iron & 2,3 \\ \cline{1-3} 27 &\sf Nickel & 3,2 \\ \cline{1-3} 28 &\sf Cobalt & 2 \\ \cline{1-3} 29 &\sf Copper & 2,1 \\ \cline{1-3} 30 &\sf Zinc & 2 \\ \cline{1-3}\end{array}$