Fill in the blanks.
A. Electron, proton, neutron are the types of _____ in an atom.
B. An electron carries a _charge.
C. The electron shell ___ is nearest to the nucleus.
D. The electronic configuration magnesium is 2, 8, 2. From this it is understood that the valence shell of magnesium is_
E. 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.

Open in App

Solution

a. Electron, proton, neutron are the types of subatomic particles in an atom.
b. An electron carries a negative charge.
c. The electron shell K is nearest to the nucleus.
d. The electronic configuration magnesium is 2, 8, 2. From this it is understood that the valence shell of magnesium is M shell.
e. The valency of hydrogen is 'one as per the molecular formula H₂O . Therefore valency of 'Fe' turns out to be three as per the formula Fe₂O₃.

Suggest Corrections

Similar questions

Which element has

(a) two shells, both of which are completely filled with electrons?

(b) the electronic configuration 2, 8, 2?

(d) a total of two shells, with three electrons in its valence shell?

(e) twice as many electrons in its second shell as in its first shell?

3^{r d}

n s^{2} n p^{5}

Join BYJU'S Learning Program