The atomic number and the mass number of certain elements are given...

Channel:
PW Solutions
Subscribers:
449,000
Published on ● Video Link: https://www.youtube.com/watch?v=JlOmbVTZumI


Duration: 5:38
70 views
0

The atomic number and the mass number of certain elements are given below in the table.
W
\begin{tabular}{ccccccc}
\hline Element & \( A \) & \( B \) & \( C \) & \( D \) & \( E \) & \( F \) \\
\hline Atomic number & 1 & 3 & 8 & 18 & 20 & 1 \\
\hline Mass number & 2 & 7 & 16 & 40 & 40 & 1 \\
\hline
\end{tabular}
(i) Select a pair of isobar and isotope from the above table.
(ii) What would be the valency of elements \( B \) and \( E \) ?
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2023-02-13Which of the following is not true about the voids formed in 3 dime...
2023-02-13Calculate \( \mathrm{pH} \) of following solutions : (a) \( 0.08 \m...
2023-02-13Which of the following statements is correct for the \( \left[\math...
2023-02-13Match list-I with list-Il and select the correct answer by using th...
2023-02-13Write down the formulae of the following compounds tetraammineaquacobalt(III)- \( \mu \)-cyanido...
2023-02-13key Concept: Congruency Rule CPCT Sol In \( \triangle A B M \) and \( \triangle P Q N \), we hav...
2023-02-13Calculate the \( \mathrm{pH} \) of a solution prepared by mixing \(...
2023-02-13Which of the following complex ion possesses \( d s p^{2} \) hybrid...
2023-02-13In which of the following pairs both the complexes show optical iso...
2023-02-13If \( z_{1}+z_{2}+z_{3}=0 \), then \( \left|z_{2}-z_{3}\right|^{2}+...
2023-02-13The atomic number and the mass number of certain elements are given...
2023-02-13Evaluate the following integrals: \[ \int \frac{8 \cot x+1}{3 \cot ...
2023-02-13The order of screening effect of electrons of s, p, d and \( \mathr...
2023-02-13Which of the following statements is correct for the complex \( \ma...
2023-02-13In Fig. if \( \mathrm{AB} \| \mathrm{CD}, \angle \mathrm{APQ}=50^{\circ} \) and \( \angle \mathr...
2023-02-13Give a definition for each of the following terms. Are there other terms that need to be defined...
2023-02-13A spring mass system is given below find maximum extension of the s...
2023-02-13If \( \bar{a}=b, c \in \mathbf{R} \), and \( |b|^{2}\mathrm{c} \), ...
2023-02-13Consider the equilibrium: \( \mathrm{P}(\mathrm{g})+2 \mathrm{Q}(\m...
2023-02-13A system is shown in the figure. The time period for small oscillat...
2023-02-13The screening effect of d-electrons is - \( \mathrm{P} \) (1) Equal...


Tags:
pw