When a potassium atom reacts with a bromine atom the potassium atom will

If an ion has 16 protons and 18 electrons it will be _____________.

If an ion has 20 protons and 15 electrons it will be ___________.

Electrons found in the outer shell (or energy level) of an atom are called _____________ electrons.

The first shell of any atom can hold maximum of ___________electrons.

Which of these elements do not have atoms whose out shells are full of electrons?

If a chlorine atom were to gain one more electron it would be similar to, but not exactly the same as -

An element in group IIA would form a __________ ion while an element in group VIIA would form a(n) __________ ion.

Which of these elements has atoms that would have the most difficulty forming a covalent bond with oxygen (O)?

Atoms gain the same electron configuration as noble gases by

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