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4. When atom X has an atomic number of 45. what particles of atom X will be 45?
A. Electrons & Neutron
B. Electrons and Protons
C. Neutrons
D. Promons

6. A certain ion has a charge of 1+, its mass number is 30 and atomic number of 11 What will be the number of its electron?
A. 30
B. 11
C. 10
D. 12

7. An ion which has an electron of 10, atomic mass of 27 and atomic number of 7 what is its charge?
A. 3.
B. 3+
C. O
D. no charge

8. If an atom has an atomic number of 100, what will be the number of its electrons?
A. 50
B. 100
C. no charge
D. cannot be determined

9. Beryllium belongs to group IIA and an atomic number of 4 how many electrons does it has?
A. 4
B. 5
C. 2
D. cannot be determined

Sagot :

Florence3172idn

Answer:

4. When atom X has an atomic number of 45. what particles of atom X will be 45?

A. Electrons & Neutron

B. Electrons and Protons

C. Neutrons

D. Promons

6. A certain ion has a charge of 1+, its mass number is 30 and atomic number of 11 What will be the number of its electron?

A. 30

B. 11

C. 10

D. 12

7. An ion which has an electron of 10, atomic mass of 27 and atomic number of 7 what is its charge?

A. 3.

B. 3+

C. O

D. no charge

8. If an atom has an atomic number of 100, what will be the number of its electrons?

A. 50

B. 100

C. no charge

D. cannot be determined

9. Beryllium belongs to group IIA and an atomic number of 4 how many electrons does it has?

A. 4

B. 5

C. 2

D. cannot be determined

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