A is a group 2 element and B is a group 7 element.
24) The first four IE of an element A are 300 kJ, 500 kJ, 8000 kJ and 10000 kJ respectively. Similarly the first three EA of an element B are −1000 kJ, 100 kJ and 500 kJ respectively. What will be the formula of compound formed by A and B?
Answer is:
AB2
Explanation:
Related Inorganic Chemistry MCQ with Answers
Answer is:
Electron affinity of Na+
Answer is:
The pH of QOH solution will be more than 7
Explanation:
IP of X is a smaller value, therefore an alkali metal. IP of Q is comparatively higher, hence halogen. So, QOH is a hypohalous acid (pH < 7).
Answer is:
Si
Explanation:
The jump in IP values exist in IP5 and thus removal of fifth electron occurs from inner shell. So, element contains 4 electrons in its valence shell.