Question

Which of the following is the wrong statement?
(А.
All the actinoid elements are radioactive
B
Alkali and alkaline earth metals are s-block elements
(с .
Chalcogens and halogens are p-block elements
D
The first member of the lanthanoid series is lanthanum​

Answer 1

Explanation:

Alkali and alkaline earth metals are s-block elements

The s-block in the periodic table of elements occupies the alkali metals and alkaline earth metals, also known as groups 1 and 2. ... Alkali metals are the chemical elements found in Group 1 of the periodic table. The alkali metals include: lithium, sodium, potassium, rubidium, cesium, and francium.

Answer 2

B option is wrong hope it is right answer