Question 28.
Write the names from the description.
Two elements having valency 4.
Answer:
Two elements having valency four are 14Si (silicon) and 6C (carbon)
Explanation:
⇒ The atomic number of carbon = 6
The electronic configuration of 6C = 2,4
The electrons in the outermost shell = 4
Thus, its valency is 4.
⇒ The atomic number of silicon = 14
The electronic configuration of 14Si = 2,8,4
The electrons in the outermost shell = 4
Thus, its valency is 4
Cursive Writing – Small Letters
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Look and write with vowels a, e, i, o, u
Fill in the Missing Number Worksheets
Multiplication Sheet practice for Children
Counting practice from 1 to 100 Worksheet
Hindi Alphabets. (Swar)
Hindi Alphabets. (Vanjan)
Colours name in Hindi | रंगों के नाम
Fruits name in Hindi | फलों के नाम
Vegetables name in Hindi | सब्जियों के नाम
Hindi Vyanjan Tracing Worksheets
Write the First Letter of picture - Hindi Swar Worksheets
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Miscellaneous Hindi Worksheets
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4 Letter Words Hindi Worksheets
AA (ा) – AA ki Matra | आ (ा) की मात्रा
i ( ि) - i ki Matra | इ ( ि) की मात्रा
EE ( ी) – EE ki Matra | ई ( ी) की मात्रा
U (ु) - U ki Matra | उ (ु) की मात्रा
O (ू ) – OO ki Matra | ऊ (ू) की मात्रा
E ( े) - E ki Matra | ए ( े ) की मात्रा
AI (ै) - AI ki Matra | ऐ (ै)की मात्रा
o ( ो) - o ki Matra | ओ (ो) की मात्रा
ou ( ौ) - ou ki Matra | औ ( ौ) की मात्रा
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….
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