Periodic trends

Horizontal rows are called ____________ aka ___________. Vertical columns are called _____________ or ______________.

Group 1a is named ____________________. Group 2a is ________________________. The midsection is the __________________. Below the staircase are _______________. The staircase is made of _________________. Above the staircase is _________________. Group 7a are ___________________. Group 8a are ______________________.

Atomic Radius increases __________________ to left. ______________ to ____________.

Ionic Radius increase ____________ to ___________, ____________ to ___________.

Electronegativity increases ____________ to ______________. ______________ to ____________.

Nuclear charge increases ___________________________. __________________________ to _______________.

Shielding effect is ________________ across the period. But increases _______ to _________.