Look at the above table. 1. What charge should Element 1 have (B)

A. 0
B. 1+
C. 6
D. 12

2. How many neutrons should Element 2 have (C)

A. 11
B. 7
C. 13
D. 6

3. How many valence electrons does carbon have?

A. 6
B. 2
C. 4
D. 3

1. A. 0

2. B. 7

3. C. 4

Explanation:

1. charge is equal to the number of protons minus the number of electrons!

2. neutrons is equal to mass number minus atomic number!

3. valence electrons equal 4!

Hope this helped you! :)

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.

→