Question

(C) shells
I. Select the correct option:
1. The circular paths in which electrons revolve around the nucleus of an atom are called the
(a) nucleons o (b) protons o
(d) ions
2. The neutron was discovered by
(a) Goldstein
(b) Neils Bohr
(C) Sir James Chadwick
(d) Ernest Rutherford
3. The innermost shell of an atom can occupy
(a) 8 electrons.
(b) 2 electrons.
(C) 18 electrons.
(d) any number of electrons.
4. How many valence electrons does an atom of sodium have?
(a) 1
o (b) 2
(c) 3
(d) 4
5. Which of the following is the correct electronic configuration of sulphur?
(a) 2,8,2
(b) 2,8,4
(c) 2,8, 6 o (d) 2,8,8
6. An atom with atomic number 18 and mass number 40 has
(a) 18 electrons, 18 protons and 20 neutrons,
(b) 18 protons, 18 electrons and 22 neutrons.
(C) 18 protons, 18 electrons and 18 neutrons.
(d) 18 protons, 22 electrons and 18 neutrons.
7. An isotope of an element has different
(a) mass numbers.
(b) atomic numbers.
(C) number of protons,
(d) number of electrons.
II State if the following statements are True or False Correct the folosto​

Answer 1

Answer:

1. d
2. c
3. b
4. a
5. c
6. d
7. a

Explanation:

I hope this will help you

Answer 2

Answer:

1. Shell or orbits

2.Sir James Chadwick

3. 2 electrons

4. 1

5. 2,8, 6

6. 18 protons, 18 electrons and 22 neutrons

7.mass numbers