1
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

In second period of the long form of the periodic table an element $$X$$ has second lowest first ionisation enthalpy and element $$Y$$ has second highest first ionisation enthalpy values. What are $$X$$ and $$Y$$ ?

A
B, F
B
Be, Ne
C
Be, O
D
C, O
2
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Lithium shows diagonal relationship with element '$$X$$' and aluminium with $$Y . X$$ and $$Y$$ respectively are

A
$$\mathrm{Mg}, \mathrm{Be}$$
B
$$\mathrm{Be}, \mathrm{Mg}$$
C
$$\mathrm{Na}, \mathrm{Si}$$
D
$$\mathrm{B}, \mathrm{Be}$$
3
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The correct order of the metallic character of the elements $$\mathrm{Be}, \mathrm{Al}, \mathrm{Na}, \mathrm{K}$$ is

A
$$\mathrm{K}>\mathrm{Na}>\mathrm{Al}>\mathrm{Be}$$
B
$$\mathrm{K}>\mathrm{Al}>\mathrm{Na}>\mathrm{Be}$$
C
$$\mathrm{Al}>\mathrm{K}>\mathrm{Na}>\mathrm{Be}$$
D
$$\mathrm{Na}>\mathrm{K}>\mathrm{Be}>\mathrm{Al}$$
4
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following tetrahalides does not exist?

A
$$\mathrm{CCl}_4$$
B
$$\mathrm{SiCl}_4$$
C
$$\mathrm{PbCl}_4$$
D
$$\mathrm{Pbl}_4$$
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