A -CH3 group is called a methyl group.
Group ONE - this group is called the Alkali metal group
Transition Metals group 3 to group 12 elements
Carbon group or group 14
native if that is a mineral group
a prickle
herd or prickle
a prickle
The word you seek is 'prickle'.
A group of hedgehogs is known as either an array of hedgehogs or a prickle of hedgehogs.
An acantha is a prickle in botany, or an animal's spine or prickle.
A group of porcupines is called a herd or prickle.
She felt a prickle as she brush agints the cactus
On the nature hike, I felt the prickle of a pine cone under my feet.
The cactus prickle lodged in my finger, causing a sharp pain.
The collective nouns are an array of hedgehogs, a prickle of hedgehogs. However, in the wild there would never be such a thing as they are solitary animals.
"Porcupines" is already a plural noun. The singular form is porcupine. A group of porcupines is commonly referred to as a "prickle" of porcupines.