Question

*₁₁Na, ₁₅K, ₁₇Cl, ₁₄Si, यांच्यापैकी सर्वात कमी अणुत्रिज्या असलेला अणु कोणता?*

1️⃣ ₁₄Si
2️⃣ ₁₇Cl
3️⃣ ₁₅K
4️⃣ ₁₁Na​

Answer 1

Answer:

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Explanation:

11Na, 15P, 17Cl, 14Si, 12Mg

Electronic configuration of the following elements is:

11Na = 2,8,1

15P = 2,8,5

17Cl = 2,8,7

14Si = 2,8,4

12Mg = 2,8,2

11Na has largest size among these because according to the trend, atomic radius decreases as we move from left to right in a period of the periodic table. The atomic number of elements increases which means the number of protons and electrons in the atoms increases. Due to large positive charge on the nucleus, the electrons are pulled closer to the nucleus and the size of atom decreases.