[amp_mcq option1=”Alkali metal group” option2=”Zero group” option3=”Halogen group” option4=”Alkaline-earth metal group” correct=”option3″]<\/p>\n
The correct answer is C. Halogen group.<\/p>\n
The halogens are a group of elements in the periodic table that are highly reactive and form salts with metals. They are all non-metals and exist as diatomic molecules in the gas phase. The halogens are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).<\/p>\n
Fluorine is the most reactive element in the periodic table. It is a pale yellow gas that is extremely poisonous. Chlorine is a greenish-yellow gas that is also poisonous. Bromine is a reddish-brown liquid that is also poisonous. Iodine is a purple solid that is less poisonous than the other halogens. Astatine is a radioactive element that is so rare that its properties are not well known.<\/p>\n
The halogens are all highly reactive because they have seven valence electrons. This means that they need to gain one electron to form a stable octet. They do this by reacting with metals to form salts. For example, chlorine reacts with sodium to form sodium chloride (NaCl), which is common table salt.<\/p>\n
The halogens are also used in a variety of other applications, such as in the production of plastics, pharmaceuticals, and pesticides.<\/p>\n","protected":false},"excerpt":{"rendered":"
[amp_mcq option1=”Alkali metal group” option2=”Zero group” option3=”Halogen group” option4=”Alkaline-earth metal group” correct=”option3″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[636],"tags":[],"class_list":["post-5248","post","type-post","status-publish","format-standard","hentry","category-non-metal-and-its-compounds","no-featured-image-padding"],"yoast_head":"\n