Question

1. The basic unit of matter is _______

(a) Element (b) Atom (c) Molecule (d) Electron

2. The sub atomic particle revolve around the nucleus is ________

(a) Atom (b) Neutron (c) Electron (d) Proton

3. __________ is positively charged

(a) Proton (b) Electron (c) Molecule (d) Neutron

4.The atomic number of an atom is ___________

(a) Number of neutrons (b) Number of Protons

(c) Total number of Protons and Neutrons (d) Number of atoms

5. Nucleons comprises of________________

a) Protons and electrons b) Neutrons and electrons

c) Protons and neutrons d) Neutrons and Positron

6. Atoms which have same atomic number but different mass number are

called _______

(a) Isobars (b) Isotopes (c) Isotones (d) All of these

7. The valency of Magnesium is _______

(a) 1 (b) 2 (c) 3 (d) 4

8. The charge of electron is __________

(a) Positive (b) Negative (c) Neutral (d) None of these

9. The scientist who discovered the Neutron

(a) Dalton (b) Thomson (c) James Chadwick (d) Rutherford

10. In which year Dalton atomic theory was proposed

(a) 1906 (b) 1808 (c) 1863 (d) 1867​

Answer 1

Answer:

1 atom

2.electrons

3.proton.

4.number of protons.....

Answer 2

give answer please

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