Press "Enter" to skip to content

What is the general trend in atomic size within a period?

Atomic size gradually decreases from left to right across a period of elements. This is because, within a period or family of elements, all electrons are added to the same shell. However, at the same time, protons are being added to the nucleus, making it more positively charged.

How does atomic size change within groups and periods?

How does atomic size change within groups across periods? Atomic size increases from top to bottom within a group and decreases from left to right across a period. First ionization tends to decrease from top to bottom within a group and increase from left to right.

What is the general trend in ion size as you move across a period?

Ionic size increases from top to bottom down a group of elements in the periodic table. From left to right across a period, the ionic size decreases as long as you are comparing all metals or all nonmetals. Between the metals and nonmetals, the ionic size increases as you switch from cations to anions.

What is the general periodic trend for atomic mass?

Atomic mass will generally increase from left to right and always increase from top to bottom.

What is the trend in melting point in Group 1?

The figure above shows melting and boiling points of the Group 1 elements. Both the melting and boiling points decrease down the group. When any of the Group 1 metals is melted, the metallic bond is weakened enough for the atoms to move more freely, and is broken completely when the boiling point is reached.

Which has a higher boiling point CH4 or SnH4?

– The molar masses of CH4, SiH4, GeH4, and SnH4 are approximately 16 g/mol, 32 g/mol, 77 g/mol, and 123 g/mol, respectively. Therefore, CH4 is expected to have the lowest boiling point and SnH4 the highest boiling point.

Which has higher boiling point HBr or HCl?

HF shows H-bonding possess higher boiling point or less volatile nature. HCl has the least boiling point due to the small dispersion intermolecular forces. HCl < HBr < HI < HF. Was this answer helpful?