Chemistry
Name or state the following.
(a) An element having valency zero.
(b) Metal with valency one.
(c) Atoms of the same element differing in mass numbers.
(d) Elements having same mass number but different atomic number.
(e) Bond formed by transfer of electrons(s)
(f) Ion formed by gain of electron(s)
Related Questions
Identify the following reactions as either oxidation or reduction:
(i) O + 2e- ⟶ O2-
(ii) K - e- ⟶ K+
(iii) Fe3+ + e- ⟶ Fe2+
(iv) Zn ⟶ Zn2+ + 2e-
Give the terms for the following definitions:
(a) A bond formed by a shared pair of electrons, each bonding atom contributing one electron to the pair.
(b) A bond formed by transfer of electron(s).
(a) Define covalent (molecular) bond.
(b) Give an example of covalent bond formed by
(i) similar atoms
(b) dissimilar atoms
An element A has 1 electron in its first shell. It combines with element B having 7 electrons in its third shell. What type of bond is formed ?