Question

Rutherford's alpha scattering experiment was responsible for
(a) Atomic nucleus (h) Electron
12. Isotopes of an element has
(4) Same physical properties
(c) Different number of neutrons
13. Number of valence electrons in lion are
(m) 16
(b) 8
14. Which of the following is correct electronic configuration of
(a) 2,8,1
B. True or False
For the following statements write T for true and T for false
1. Electrons are present in all matter and carry negative change
2. In Na number of electrons are more than the number of prom
3. The number of neutrons in the atoms of an element is equal to
4. Atomic number is an average quantity
5. Isotopes of an element differ in the number of neutrons
6. Element having electronic arrangement 2,7 is fluorine
7. Matter is electrical and negative in nature.
8. Mass of electron is about 1840 times that of proton
9. Neutrons were discovered by Henry Becquerel​

Answer 1

Answer:

• rutherford's Alpha scattering experiment was responsible for detecting nucleus in any atom
• isotopes of an element has different number of neutrons

1. T
2. F
3. ASK THE QUESTION PROPERLY
4. F
5. T
6. T
7. F
8. F
9. F

There are problems with the questions no 13 and 14,ask the question properly.