Fill in the blanks:(i) Electron, proton, neutron are the types of …�

1.	Fill in the blanks:(i) Electron, proton, neutron are the types of ………… in an atom.(ii) An electron carries a ……………. charge.(iii) The electron shell ………….. is nearest to the nucleus.(iv) The electronic configuration of magnesium is 2, 8, 2. From this it is understood that the valence shell of Magnesium is …………….. .(v) The valency of hydrogen is one as per the molecular formula H2O. Therefore valency of ‘Fe’ turns out to be ………….. as per the formula Fe2O3 .
Answer» (i) Electron, proton, neutron are the types of subatomic particles in an atom. (ii) An electron carries a negative charge. (iii) The electron shell K is nearest to the nucleus (iv) The electronic configuration of magnesium is 2, 8, 2. From this it is understood that the valence shell of Magnesium is M. (v) The valency of hydrogen is ‘one’ as per the molecular formula H₂ O. Therefore valency of ‘Fe’ turns out to be 3 as per the formula Fe₂ O₃.

Fill in the blanks:(i) Electron, proton, neutron are the types of ………… in an atom.(ii) An electron carries a ……………. charge.(iii) The electron shell ………….. is nearest to the nucleus.(iv) The electronic configuration of magnesium is 2, 8, 2. From this it is understood that the valence shell of Magnesium is …………….. .(v) The valency of hydrogen is one as per the molecular formula H2O. Therefore valency of ‘Fe’ turns out to be ………….. as per the formula Fe2O3 .

Answer»

(i) Electron, proton, neutron are the types of subatomic particles in an atom.

(ii) An electron carries a negative charge.

(iii) The electron shell K is nearest to the nucleus

(iv) The electronic configuration of magnesium is 2, 8, 2. From this it is understood that the valence shell of Magnesium is M.

(v) The valency of hydrogen is ‘one’ as per the molecular formula H₂ O. Therefore valency of ‘Fe’ turns out to be 3 as per the formula Fe₂ O₃.