{"id":28879,"date":"2023-03-08T12:59:42","date_gmt":"2023-03-08T07:29:42","guid":{"rendered":"https:\/\/icsesolutions.com\/?p=28879"},"modified":"2023-03-09T10:20:15","modified_gmt":"2023-03-09T04:50:15","slug":"new-simplified-chemistry-class-9-icse-solutions-atomic-structure","status":"publish","type":"post","link":"https:\/\/icsesolutions.com\/new-simplified-chemistry-class-9-icse-solutions-atomic-structure\/","title":{"rendered":"New Simplified Chemistry Class 9 ICSE Solutions Atomic Structure"},"content":{"rendered":"

New Simplified Chemistry Class 9 ICSE Solutions Atomic Structure<\/span><\/h2>\n

ICSE Solutions<\/a>Selina ICSE Solutions<\/a>ML Aggarwal Solutions<\/a><\/p>\n

Viraf J Dalal Chemistry Class 9 Solutions and Answers<\/strong><\/p>\n

Simplified Chemistry<\/a>Physics<\/a>Chemistry<\/a>Biology<\/a>Maths<\/a>Geography<\/a>HistoryCivics<\/a><\/p>\n

Exercise
\n<\/strong><\/span><\/p>\n

Question 1.(1984)<\/strong><\/span>
\nDefine the terms : atomic number, mass number and electron.
\nAnswer:<\/strong><\/span>
\nAtomic number [Z] : \u201cIs the number of protons in the nucleus of an atom.\u201d
\nOR \u201cIs the number of positive charges in the nucleus of its atom.\u201d
\nOR \u201cIs the number of electrons in the complete atom.\u201d
\nZ = P = e
\nMass number [A] : \u201cIs the total number of protons and neutrons in the atom of an element.\u201d
\nA = P + n
\nElectron [e] : \u201cA sub-atomic particle having a unit negative charge and mass equal to 1\/1837 of that of hydrogen atom, revolve round the nucleus.\u201d [-1<\/sub>e0<\/sup>]<\/p>\n

Question 1.(1985)<\/strong><\/span>
\nFrom the symbol \"\\begin{matrix} He for the element helium, write down the mass number and the atomic number of the element.
\nAnswer:<\/strong><\/span><\/p>\n

\"New<\/p>\n