Please help 30 POINTS the symbol, the group number, and the period of each of the following elements: nitrogen, sodium, iodine, and mercury
and if you can do the rest that would be great

Contrast the force of gravity between these pairs of objects a 1 kg mass and a 2 kg mass that are 1 m apart and two 2 kg masses that are 1 m apart

Which is not one of the major climate zones? question 3 options: rain forest polar tropical temperate

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?