Question
A nucleus with mass number A and atomic number Z
undergoes β⁻ decay. Which of the following is correct about the daughter nucleus?Solution
In β⁻ decay, a neutron inside the nucleus is converted into a proton, emitting a beta particle (electron) and an antineutrino. Since a neutron becomes a proton, the atomic number (Z) increases by 1, but the mass number (A) remains unchanged because both protons and neutrons contribute equally to it. So, after β⁻ decay:
- Z → Z + 1
- A remains the same
16.01(? × 8.09 ÷ 16.09) = 3.01 of 69.69 + 14.12 of 4.01 - 100.998 of 2.19
A shopkeeper sold an article after giving a discount of 25% and made a profit of Rs.40. Find the difference between the marked price and selling price o...
(?)2 + 9.113 = 31.92 – 39.03
(?)2 = (5.99)2 + (7.88)2 + 43.99
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exactvalue.)
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
739.85 + 5003 ÷ 24.99 × 69.999 = ?
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
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