Chemistry
The electronic configuration of four elements is:
(i) W: 2,6
(ii) X: 2,8
(iii) Y: 2,8,1
(iv) Z: 2,8,7
Which pair of atoms will form a covalent compound.
- Two atoms of W
- Two atoms of X
- An atom of W & an atom of X
- An atom of Y & an atom of Z
Answer
Two atoms of W
Reason — The electronic configuration of four elements :
(i) W: 2,6 — Atomic number 8
(ii) X: 2, 8 — Atomic number 10
(iii) Y: 2,8,1 — Atomic number 11
(iv) Z: 2,8,7 — Atomic number 17
Covalent bonding occurs between non-metals by sharing electrons. W needs 2 more electrons to complete its octet. So, two W atoms can share electrons with each other, forming a covalent bond
Hence, two atoms of W will form covalent bond.
However, X has completely filled outer shell, so it is not involved in covalent bond formation and bond between Y and Z is ionic.
Related Questions
Elements A & B have electronic configuration : 8 & 13 respectively. The chemical formula formed between A & B will be:
- AB
- B3A3
- A2B3
- B2A3
Alkaline earth metals have the same:
- Number of valence electrons
- Number of shells
- Metallic property
- lonization potential
Element with an atomic number 19 will:
- Accept an electron & get oxidized
- Accept an electron & get reduced
- Lose an electron & get oxidized
- Lose an electron & get reduced
Element with low ionization potential likely to be:
- Metal
- Metalloid
- Non-metal
- Inert gas