BOHR's Model & Electronic configuration

Which energy level formula is used to determine the number of electrons it can hold?

• 2n²

• 2n

• n²

• 3n²

How many electrons does sulphur have in its third energy level?

• 2

• 6

• 8

• 0

How many electrons are in the second energy level of a magnesium atom?

• 2

• 6

• 8

• 12

Which of the following is the correct electronic configuration if an element contains 4 electrons in its M shell?

• a) 2, 8, 4

• b) 2, 4, 8

• c) 2, 4, 2

• d) 2, 4, 4

Argon has 8 electrons in its outer most shell (valence shell), What would be its valency?

• 1

• 2

• 8

• 0