Table of Contents
Why the valency of potassium is +1 and chlorine is?
Chlorine (Cl) has an electronic configuration of 2,8,7 and hence requires one electron to complete its outermost shell. Potassium (K) has a configuration of 2,8,8,1 and hence also needs to donate 1 electron to complete its octet. Hence both their Valencies are 1.
Why the valency of the metal potassium is +1?
If potassium donates one electron and becomes potassium ion, the configuration will be 2, 8, 8. So, the number of electrons that potassium needs to donate to attain stability is 1. Therefore, the valency of potassium is 1.
Why the valency of non-metal chlorine is?
Chlorine is a non-metal. In nonmetals the number of electrons required to complete an octet will be its valency.
Why the valency of chlorine is 1 give reason?
The atomic number of chlorine is 17 (Z=17). Therefore, valence electron in chlorine is 7 and it needs to gain 1 electron from the outermost orbit to attain octet. Hence, the valency of chlorine is 1.
Why is Oxygen’s valency 2?
The valency of oxygen is 2, because it needs two atoms of hydrogen to form water. The nearest noble gas to magnesium is neon with electronic configuration of [2,8], to achieve this stable electronic configuration Mg can lose 2 valence electrons, hence its valency is 2^+ .
What is the valency of potassium and chlorine respectively?
They are separated by one element in the periodic table, and have valencies 1 and 3 respectively. Chlorine and potassium are also separated by one element in the periodic table (their atomic number being 17 and 19 respectively) and yet both have valency 1.
What is the valency of potassium and chlorine?
Valency of First 30 Elements
| Element | Atomic Number | Valency |
|---|---|---|
| Valency of Sulphur | 16 | 2 |
| Valency of Chlorine | 17 | 1 |
| Valency of Argon | 18 | 0 |
| Valency of Potassium (K) | 19 | 1 |
What is the valency of chlorine 1 or 1?
Therefore, the valency of chlorine is 1. How to find valency?
Why chlorine is written as Cl2?
Chlorine is called Cl2 because it is a diatomic molecule. Diatomic means there are two atoms of the same elements in the molecule. There are other diatomic molecule, such as hydrogen (H2), nitrogen (N2), oxygen (O2), fluorine (F2), chlorine (Cl2), bromine (Br2), iodine (I2).
Why is the valency of Aluminium 3?
The valency of aluminium is\[3\]. Because aluminium atoms lose three electrons to attain the stable electronic configuration in aluminium chloride. The other radical present in the aluminium chloride is chlorine. Each chlorine atom gains one electron to attain stable electronic configuration.
Why is the valency of neon zero?
Valency is zero, being a noble gas, does not react because of that fact. Answer: valency of neon is 0 because it has completely filled valence{outermost} shell i.e. 8 electrons and so it is stable.