atomic structure

Question 1

what is the atomic number?

Answer 1

the number of protons in the nucleus of x element

Question 2

what is the mass number?

Answer 2

the number of both (nucleons) neutrons and protons in the nucleus of x element

Question 3

what models are there to show an atom?

Answer 3

Bohr, plum pudding, rutherford

Question 4

what is the structure of an atom?

Answer 4

nucleus comprised of positively charged subatomic particles (protons) and neutrally charged subatomic particles ( neutrons) with shells of negatively charged subatomic particles (electrons) orbiting the nucleus

Question 5

what is the relative masses and charges of protons, neutrons and electrons?

Answer 5

relative mass relative charge

protons: 1.0 +1
neutrons: 1.0 0
electrons: 1/2000 -1

Question 6

what is the no. of protons equal to?

Answer 6

electrons

Question 7

what letter characterises the mass number?

Answer 7

A

Question 8

What letter characterises the atomic number?

Answer 8

Z

Question 9

what is the mass number always?

Answer 9

bigger than the atomic number.

Question 10

why does chromium come after vanadium in the periodic table?

Answer 10

The order of the periodic table depends on the atomic number . Vanadium has an atomic number of 23 and chromium has an atomic number of 24.