Question

11.Atomic number and mass number of an element X is 8 and 16 respectively. a. Write the number of electrons, protons and neutrons. b. Write its electronic configuration. c. What is its valency? d. Draw the atomic structure of this element. (5)​

Answer 1

Answer:

Element is OXYGEN

Explanation:

No of electrons in oxygen =8

No of protons in oxygen =8

No of neutrons in oxygen =8

It's Electronic configuration is : [He] 2s² 2p⁴

Valency of oxygen : 2