Review the families and classification of elements in the periodic table. Based on this information, you would expect elements to the left of the stair-step line in the periodic table to form ions and have valence electron(s).

A) positive; 1

B) negative; 4 - 7

C)positive; four or less

D) negative; three or less

Answer- C)positive; four or less

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101