Question

Q18. An atom X' whose
एक परमाणु atX जिसका
Number of Electrons = 11
Number of protons = 11



Number of neutrons =
= 12
Predict the atomic number, mass number, symbol and name of
the element. .
तत्व की परमाणु संख्या, द्रव्यमान संख्या, प्रतीक और नाम की
भविष्यवाणी करें।​

Answer 1

Answer:

atomic number= 11 ( no of proton).

mass number= no of proton + no of neutron.

= 11+12 = 23

symbol= Na

Name of element= Sodium

Learn the periodic table from 1 to 20... It will help you.