Question

(6) An atom is electrically
(7) Except hydrogen, the nuclei of all atoms contain
(8) C. ....... and ......... are isotopes of carbon.
(9) An atom has 11 protons and ..neutrons and henc
ons and ...... neutrons and hence its atomic mass number is 23
(10) The element
- has two electrons in the K shell, but it is a noble gas.
(11) Isotopes of the element have the same
................ properties.
(12) Electrons must absorb
- to transit between orbits.​

Answer 1

6) electrically neutral

7) neutrons

8) Carbon-12 and Carbon-14

9)no of neutrons= 23-11= 12

10)Helium gas

11) chemical

12) Energy