MCQ
Which of the following is/are covalent binary compound(s)?
- ABF3
- BKBr
- CCaI2
- DAlF3
✓
Answer
- BF3
Explanation:
A binary compound is a compound composed of only two elements i.e., a binary compound is made from exactly two different elements. There are two types of binary compounds.
Ionic binary compound: Binary compound which is formed by the combination of a metal atom and non metal atom is called ionic binary compound, e.g., KBr, NaCl, CaI2, AlF3, MgBr2.
Covalent binary compound: Binary compound which is formed by the combination of two non metal atoms is called binary covalent compound. In binary covalent compound sharing of electrons takes place, e.g., BF, N2O, P2O5, N2H4, CH4 and H2O.
Binary compound formed by B and F is BF3 in which both boron (B) and florine (F) are non metals, hence, it is covalent binary compound.
Binary compound formed by K and Br is KBr in which potassium (K) is metal and bromine (Br) is non metal. Hence, its is ionic binary compound.
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