Nacl has electovalent bond but CH4 has covalent bond. why
Answers
Answer:
The electron configuration of H,C,Na and Cl are given below:
H(1)=1s1
C(6)=1s2 2s2 2p2
Na(11)= 1s2 2s2 2p6 3s1
Cl(17)= 1s2 2s2 2p6 3s2 3p5
From the electronic configuration of Na it has shown that Na has only one electron in its outermost energy level which can easily donate and achieved electron configuration of Neon. One the other hand, Cl atom has 7 electrons in its outermost energy level. So,it can easily gain one electron and achieved electron configuration of Argon. So,Na donates one electron to form Na+ ion and Cl gains one electron to form Cl- ion. Na+ ion and Cl- ion combined together to form NaCl.Since NaCl formed by action and anion, so it has electrocovalent bond.
Na -e = Na+
Cl + e = Cl-
Na+ + Cl- = NaCl
On the other hand, H and C have no capacity to exchange electrons. So,they share electrons to each others to form CH4. As a result,C achieved 8 valence electrons and H achieved 2 valence electrons. Since CH4 is formed by electron sharing, so it has covalent bond.
Answer:
Lincage is different
Explanation:
Na+ Cl-
C -----H 4 single bonds
Covalent lincage
Ionic character ∆EN>1.7 here
Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.An electrovalent bond is formed when a metal atom transfers one or more electrons to a non-metal atom. Some other examples are: MgCl2, CaCl2, MgO, Na2S, CaH2, AlF3, NaH, KH, K2O, KI, RbCl, NaBr, CaH2 etc.
chemical bond is formed between two atoms by the complete transfer of one or more electrons from one atom to the other as a result of which the atoms attain their nearest inert gas configuration.
There are primarily three ways in which two atoms combine to lose energy and to become stable. One of the ways is by donating or accepting electrons to complete their octet configuration. The bond formed by this kind of combination is known as an ionic bond or electrovalent bond. This kind of bond is formed when one atom gains electrons while the other atom loses electrons from its outermost level or orbit.Electrovalent bonds are produced when electrons are transferred from atoms of one element to atoms of another element, producing positive and negative ions. The bond which is formed by the transfer of electrons between the atoms is called electrovalent bond or ionic bond. Electrovalent bonds are only formed between metals and non-metals. Electrovalent bonds are not formed between two non-metals.
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.