When electrons are removed from the outermost shell of a calcium atom, the atom becomes?

D Which compound is insoluble in water?

Mengapa air panas maupun air dingin yang disimpan di dalam termos cenderung lebih tahan lama suhu panas atau dinginnya

What is the electromagnetic spectrum? A. A list of all the different types of waves B. A chart of frequencies of light waves O C. An organization of waves based on what forms them D. A separation of just the visible part of light waves

A nonmetal: is more likely than a metal to attract an electron is more likely than a metal to lose an electron requires more energy than a metal to lose an electron requires less energy than a metal to lose an electron

How do you determined the polarity of other componds by first predicting the polarity of water

Why reducing power of elements increase, on moving down a group?

Which of the following is not a result of air pollution? A. Smog B. Breathing problems C. Global warming D. Soil erosion

rank the following list of aqueous solutions and solvents according to decreasing vapor pressure the substance with the higher vapor pressure should be placed at top 0.10 M glucose pure water 0.050 M urea 0.20 M sucrose

What does the p mean in 1s22s22p63s1?

Why are alkaline earth metals and alkali metals found in nature by themselves?