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Among the following, the elements with an odd number of neutrons are:

A. S
B. Be
C. N
D. Zn

Sagot :

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To determine which elements have an odd number of neutrons, let's first understand the information provided about the elements:

1. Sulfur (S):
- Atomic Number (Z): 16
- Atomic Mass (A): 32
- Number of neutrons = Atomic Mass - Atomic Number = 32 - 16 = 16

2. Beryllium (Be):
- Atomic Number (Z): 4
- Atomic Mass (A): 9
- Number of neutrons = Atomic Mass - Atomic Number = 9 - 4 = 5

3. Nitrogen (N):
- Atomic Number (Z): 7
- Atomic Mass (A): 14
- Number of neutrons = Atomic Mass - Atomic Number = 14 - 7 = 7

4. Zinc (Zn):
- Atomic Number (Z): 30
- Atomic Mass (A): 65
- Number of neutrons = Atomic Mass - Atomic Number = 65 - 30 = 35

Next, we identify which elements have an odd number of neutrons. An odd number means the number is not divisible by 2 without a remainder.

From the calculations:
- Sulfur (S) has 16 neutrons (even number).
- Beryllium (Be) has 5 neutrons (odd number).
- Nitrogen (N) has 7 neutrons (odd number).
- Zinc (Zn) has 35 neutrons (odd number).

Therefore, the elements with an odd number of neutrons are:
- B) Beryllium (Be)
- C) Nitrogen (N)
- D) Zinc (Zn)

So, the correct answers are:
- b) Be
- c) N
- d) Zn
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