e- Configuration & Periodic Trends

Front

The electron configuration of an element is 1s² 2s² 2p⁴. How many more electrons does the element need to satisfy the octet rule?

Back

2

Front

Which element has the smallest atomic radius? Options: Ca, K, Zn, Cl

Back

Cl

Front

The element that has the greatest electronegativity is: Oxygen, Chlorine, Sodium, Flourine

Back

Flourine

Front

Electron configuration: 1s²2s²2p⁶3s²3p⁶
Options: Cl^-, K⁺, Al³⁺

Back

Cl^- and K⁺

Front

Which of these sequences do not show the correct trend in ionization energy? Options: Al<Si< P<Cl, Be<Mg<Ca<Sr, I<Br<Cl<F, Na<Mg<Al<Si

Back

Be<Mg<Ca<Sr

Front

Which element has the highest electronegativity? Options: Na, Mg, Si, Cl

Back

Cl

Front

What is the electron configuration for Arsenic?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p³

Front

The atomic radius of sodium is 190 pm. The atomic radius of rubidium is 265 pm. What is the atomic radius of potassium?

Back

Between 190 and 265 pm

Front

The octet rule states that chemical compounds tend to form so that each atom has an octet of electrons in: its p orbitals, its d orbitals, its highest occupied energy level, the 1s orbital

Back

its highest occupied energy level

Front

Electron notation for aluminum

Back

1s² 2s² 2p⁶ 3s² 3p¹.