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The fourth period ends with the element ________
- a)Helium
- b)Argon
- c)Neon
- d)Krypton
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
The fourth period ends with the element ________a)Heliumb)Argonc)Neond...
The fourth period is the row of elements in the periodic table that starts with potassium (K) and ends with krypton (Kr). Therefore, the correct answer is option 'D' which is krypton.
Explanation:
Periods in the periodic table are the horizontal rows that are numbered from 1 to 7. The fourth period is the row that follows the third period and is located between the third and fifth periods. This period contains 18 elements starting from potassium (K) and ending with krypton (Kr).
Krypton is the last element in the fourth period, which means that all of the elements that come after krypton belong to the fifth period. Krypton is a noble gas that has an atomic number of 36 and is located in group 18 of the periodic table. It is a colorless, odorless, and tasteless gas that is relatively rare in the Earth's atmosphere.
It's important to note that the elements in a period have the same number of electron shells, which means that they have similar chemical properties. However, the number of protons and electrons in each element increases as you move from left to right in a period, which affects the physical and chemical properties of the elements.
In conclusion, krypton is the correct answer for this question as it is the last element in the fourth period and all elements beyond it belong to the fifth period.
Explanation:
Periods in the periodic table are the horizontal rows that are numbered from 1 to 7. The fourth period is the row that follows the third period and is located between the third and fifth periods. This period contains 18 elements starting from potassium (K) and ending with krypton (Kr).
Krypton is the last element in the fourth period, which means that all of the elements that come after krypton belong to the fifth period. Krypton is a noble gas that has an atomic number of 36 and is located in group 18 of the periodic table. It is a colorless, odorless, and tasteless gas that is relatively rare in the Earth's atmosphere.
It's important to note that the elements in a period have the same number of electron shells, which means that they have similar chemical properties. However, the number of protons and electrons in each element increases as you move from left to right in a period, which affects the physical and chemical properties of the elements.
In conclusion, krypton is the correct answer for this question as it is the last element in the fourth period and all elements beyond it belong to the fifth period.
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Community Answer
The fourth period ends with the element ________a)Heliumb)Argonc)Neond...
Every period ends with a noble gas, as the element at the end of the period is with the fully filled orbitals. The 4th period has an outer shell as O i.e. n = 4. So the configuration is [Ar}4s23d104p6, that is Krypton.
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The fourth period ends with the element ________a)Heliumb)Argonc)Neond)KryptonCorrect answer is option 'D'. Can you explain this answer?
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