Question

UR
The electronic configuration of some elements are given below:
a. 1s², 2s², 2p6 3s²
b. is2 2s2, 2p6
C 1s², 2s², 2p²
d. is2, 2s2, 2p6,3s1
e. 1s², 2s², 2p5
Answer the following questions:
i. Name the elements.
ii. Which of these have the lowest lonization enthalpy?
Ji. Which is a halogen?
iv. Which is an alkali metal?
V. Which is an inert gas?
What are the major causes of water pollution? Explain.​

Answer 1

Answer:

i.Magnesium

Neon

carbon

Sodium

Fluorine

iii. F

iv.Na

v. Ne