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Element Symbol Box A

Posljednje ažuriranje over 8 years ago

5

1

1

1

1

1

Pitanje 1

1.

The atomic number is equal to the total number of-

neutrons

valence electrons

protons

protons + neutrons

Pitanje 2

2.

Neutrons can be calculated by-

rounding the atomic mass to the nearest whole number

subtracting the atomic number from the atomic mass

subtracting the atomic mass from the atomic number

adding the atomic number to the atomic mass

Pitanje 3

3.

The atomic mass is-

bigger than the atomic number

the number of protons plus neutrons plus electrons

the same as the element symbol

never a decimal

Pitanje 4

4.

Look at the Periodic Table on the wall. What is the atomic number of Beryllium (element 4)?

9

4

5

13

Pitanje 5

5.

How many neutrons does Beryllium (element 4) have?

9

4

5

13