Question

HOTS QUESTIONS
01 an element has two electron in its M shell:
a.
Identify the element. ?
b. What type of ion will it form?
c.What will be the formula of its chloride ? iv) Predict the solubility of its chlor
Q2 which among the following elements whose atomic number are given below belong
ve the reason 17.10.20, 12, 19.15
3 element X with atomic 12 and element Y with atomic number 17 reacts with hydroge
Which of them is expected to have high melting points?
04 why is position of hydrogen not justified in modern periodic table?​

Answer 1

Explanation:

a - magnesium; as the m shell is not completely filled hence 2+ is the valency of the element.

b - positive; as mg is a metal it will always form a positive ion

c - MgCl2