Which of the following statement concerning Bohr's model is false ?

Options

A. It predicts that probability of electron near nucless is more
B. The angular momentum of electron in H atom = `nh//2pi`
C. It introduces the idea of statinary state
D. It explains line spectrum of hydrogen

Answer

To determine which statement concerning Bohr's model is false, we will analyze each option provided in the question.

1. **Option 1**: "It predicts the probability of electron near the nucleus is more."
- According to Bohr's model, the probability of finding an electron near the nucleus is actually very low. The electron exists in specific orbits or energy levels, and the probability density is higher at certain distances from the nucleus. Therefore, this statement is **false**.

2. **Option 2**: "The angular momentum of electron in hydrogen atom is equal to n h upon 2 pi."
- Bohr's model states that the angular momentum of an electron in a hydrogen atom is quantized and given by the formula \(L = n \frac{h}{2\pi}\), where \(n\) is the principal quantum number and \(h\) is Planck's constant. This statement is **true**.

3. **Option 3**: "It introduced the idea of stationary state."
- Bohr's model indeed introduced the concept of stationary states, where electrons can occupy certain stable orbits without radiating energy. This statement is **true**.

4. **Option 4**: "It explains line spectrum of hydrogen atom."
- Bohr's model successfully explains the line spectrum of hydrogen by quantizing the energy levels of the electron. This statement is also **true**.

After analyzing all the options, we conclude that the **first option** is the false statement regarding Bohr's model.

### Summary of the Solution:
- The false statement concerning Bohr's model is: "It predicts the probability of electron near the nucleus is more."