MCQ
From the given options, electron dot structure of Mg and Na atom is.
- AMg, Na
- ✓$\ddot{ Mg }, \dot{ Na }$
- C$\dot{ M g}, \ddot{N a}$
- D$\ddot{ Mg }, Na$
✓
Answer
Correct option: B.
$\ddot{ Mg }, \dot{ Na }$
(b) $\ddot{ Mg }, \dot{ Na }$
Explanation : $\ddot{ Mg }$ - Electronic configuration of $\ddot{ Mg }$ is $2,8,2$ i.e., it has 2 electrons in outer most shell, Hence, the electron dot structure of $Mg$ atom is $\ddot{ Mg }.$
$\dot{N a}$ - Electronic configuration of $\dot{N a}$ is $2,8,1$ i.e, it has 1 electron in outer most shell, Hence, the electron dot structure of sodium is $\dot{N a}$.
Explanation : $\ddot{ Mg }$ - Electronic configuration of $\ddot{ Mg }$ is $2,8,2$ i.e., it has 2 electrons in outer most shell, Hence, the electron dot structure of $Mg$ atom is $\ddot{ Mg }.$
$\dot{N a}$ - Electronic configuration of $\dot{N a}$ is $2,8,1$ i.e, it has 1 electron in outer most shell, Hence, the electron dot structure of sodium is $\dot{N a}$.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Which of the following has highest catenation property?
How many pairs of bond and lone pair contains in the given Methane figure?
The sodium chloride and conc. sulphuric acid mixture should not be heated beyond 200°C, because :
In which process, sulphuric acid is employed in the process of metallurgy?
The voltage used in the electrolytic reduction of alumina is:
Methane reacts with energy of chlorine in diffused sunlight to give the final product as $.......$
→The metallic oxide which dissolve in water to form alkali is:
Ammonia gas burns in the excess of oxygen to form ________ and water.
Which of the following statement is/are wrong out:
(i) Alloy is a homogeneous mixture
(ii) Alloy can be a mixture of metals and non-metals
(iii) The alloy increases the strength but decreases the corrosivity of the constituent element
(i) Alloy is a homogeneous mixture
(ii) Alloy can be a mixture of metals and non-metals
(iii) The alloy increases the strength but decreases the corrosivity of the constituent element
During the manufacturing of sulphuric acid through contact process, sulphur dioxide is converted into sulphur trioxide under favourable conditions. Which of the following are the favourable conditions.
P : Exothermic reaction at low temperature; High pressure; Excess oxygen; $V _2 O _5$ as catalyst.
Q: Endothermic at high temperature; High pressure; Low oxygen; Pt as catalyst.
R : Exothermic reaction at low temperature; Low pressure, Excess oxygen; $V _2 O _5$ as a catalyst.
→P : Exothermic reaction at low temperature; High pressure; Excess oxygen; $V _2 O _5$ as catalyst.
Q: Endothermic at high temperature; High pressure; Low oxygen; Pt as catalyst.
R : Exothermic reaction at low temperature; Low pressure, Excess oxygen; $V _2 O _5$ as a catalyst.